{"id":7247,"date":"2026-06-20T10:42:43","date_gmt":"2026-06-20T10:42:43","guid":{"rendered":"http:\/\/australianholden.com\/?p=7247"},"modified":"2026-06-20T22:10:32","modified_gmt":"2026-06-20T22:10:32","slug":"holden-red-engine-oil-leak-guide-2","status":"publish","type":"post","link":"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/holden-red-engine-oil-leak-guide-2\/","title":{"rendered":"Holden Red Engine Oil Leak Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If there&#8217;s one thing almost every Holden enthusiast has experienced, it&#8217;s walking into the garage and finding a small puddle of oil under their Red Motor. Whether it&#8217;s a 149, 161, 173, 179, 186 or 202, the legendary Holden Red Engine has earned a reputation for durability, reliability and simplicity\u2014but it has also become known for marking its territory.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The reality is that most Holden Red Motors are now between 40 and 60 years old. Rubber seals harden, gaskets shrink, engine components wear and crankcase pressure increases. While a small amount of seepage may be considered normal for an older engine, significant oil leaks should never be ignored. Apart from the mess, oil leaks can lead to low oil levels, engine damage, clutch contamination and even fire risks.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Why Do Holden Red Motors Leak Oil?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The Holden Red Engine was designed in an era when minor oil seepage was almost expected.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Several factors contribute to leaks today:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ageing gaskets<\/li>\n\n\n\n<li>Hardened seals<\/li>\n\n\n\n<li>Crankcase pressure<\/li>\n\n\n\n<li>Engine wear<\/li>\n\n\n\n<li>Poor maintenance<\/li>\n\n\n\n<li>Previous repair work<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Many engines have been rebuilt multiple times over the decades, and the quality of previous workmanship often affects oil leak severity.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Rocker Cover Gasket Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The rocker cover is one of the most common sources of oil leaks on a Holden Red Motor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil around the top of the cylinder head<\/li>\n\n\n\n<li>Oil running down the side of the engine<\/li>\n\n\n\n<li>Burning oil smell<\/li>\n\n\n\n<li>Oil collecting around spark plugs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hardened gasket<\/li>\n\n\n\n<li>Over-tightened bolts<\/li>\n\n\n\n<li>Bent rocker cover flange<\/li>\n\n\n\n<li>Poor-quality gasket material<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Fortunately, this is usually one of the easiest leaks to repair.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Rocker Cover Gasket<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Permaseal Cork Rocker Cover Gasket<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excellent sealing performance<\/li>\n\n\n\n<li>Correct fitment<\/li>\n\n\n\n<li>Designed for older Holden engines<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Routine servicing<\/li>\n\n\n\n<li>Oil leak repairs<\/li>\n\n\n\n<li>Engine restorations<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_0\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 0 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_0\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Red Motor rocker cover gasket<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_0 = null;\nvar waitForDepends_fu_ebay_0 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_0);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_0 = jQuery(\"#fu_ebay_0\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Red Motor rocker cover gasket\",\nfu_ebay_query : \"Red Motor rocker cover gasket\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 0,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_0.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Side Cover Gasket Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Many owners overlook the side covers mounted on the engine block.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil running down the passenger side of the engine<\/li>\n\n\n\n<li>Oily starter motor<\/li>\n\n\n\n<li>Oil accumulation around engine mounts<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Why It Happens<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The original cork gaskets shrink and harden with age.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oil can then seep between the cover and block.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Timing Cover Oil Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The timing cover houses the timing gears and front crankshaft seal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil on harmonic balancer<\/li>\n\n\n\n<li>Oil around the front of engine<\/li>\n\n\n\n<li>Oil thrown onto engine bay components<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Worn front crankshaft seal<\/li>\n\n\n\n<li>Timing cover gasket failure<\/li>\n\n\n\n<li>Damaged balancer surface<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Front seal leaks are particularly common on high-mileage engines.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Timing Cover Gasket Set<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Permaseal Timing Cover Gasket Kit<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High-quality sealing materials<\/li>\n\n\n\n<li>Direct replacement<\/li>\n\n\n\n<li>Suitable for rebuilds<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Front engine repairs<\/li>\n\n\n\n<li>Oil leak elimination<\/li>\n\n\n\n<li>Preventative maintenance<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_1\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 1 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_1\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Gasket<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_1 = null;\nvar waitForDepends_fu_ebay_1 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_1);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_1 = jQuery(\"#fu_ebay_1\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Gasket\",\nfu_ebay_query : \"Red motor gasket kit\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 1,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_1.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Rear Main Seal Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The rear main seal is often the leak Holden owners fear most.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil dripping from bellhousing<\/li>\n\n\n\n<li>Oil on clutch components<\/li>\n\n\n\n<li>Oil stains underneath gearbox area<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Why It Happens<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The rear seal wears over time and crankshaft surfaces can also become damaged.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Important Note<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A rear main seal leak is often mistaken for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rocker cover leaks<\/li>\n\n\n\n<li>Side cover leaks<\/li>\n\n\n\n<li>Sump gasket leaks<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Proper diagnosis is essential before removing the gearbox.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Sump Gasket Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The sump gasket seals the oil pan to the engine block.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil along sump rail<\/li>\n\n\n\n<li>Oil drips underneath engine<\/li>\n\n\n\n<li>Oily crossmember<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cork gasket shrinkage<\/li>\n\n\n\n<li>Loose bolts<\/li>\n\n\n\n<li>Distorted sump flange<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Sump leaks are extremely common on older Red Motors.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Sump Gasket Kit<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Full Permaseal Engine Gasket Set<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Includes sump gasket<\/li>\n\n\n\n<li>Covers multiple leak points<\/li>\n\n\n\n<li>Ideal for engine refreshes<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multiple oil leaks<\/li>\n\n\n\n<li>Engine rebuilds<\/li>\n\n\n\n<li>Long-term repairs<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_2\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 2 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_2\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Red Motor gasket kit<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_2 = null;\nvar waitForDepends_fu_ebay_2 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_2);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_2 = jQuery(\"#fu_ebay_2\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Red Motor gasket kit\",\nfu_ebay_query : \"Red Motor gasket kit\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 2,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_2.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Excessive Crankcase Pressure<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Sometimes oil leaks are symptoms rather than causes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multiple gasket leaks<\/li>\n\n\n\n<li>Oil mist around engine bay<\/li>\n\n\n\n<li>Persistent leaks despite repairs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Worn piston rings<\/li>\n\n\n\n<li>Blocked crankcase ventilation<\/li>\n\n\n\n<li>Excessive engine wear<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">When crankcase pressure rises, oil is forced past seals and gaskets.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Crankcase Breather Upgrade<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Ryco Breather Filter<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improves ventilation<\/li>\n\n\n\n<li>Helps reduce pressure build-up<\/li>\n\n\n\n<li>Easy installation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Older engines<\/li>\n\n\n\n<li>Modified engines<\/li>\n\n\n\n<li>High-mileage Red Motors<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_3\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 3 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_3\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Ryco breather filter<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_3 = null;\nvar waitForDepends_fu_ebay_3 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_3);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_3 = jQuery(\"#fu_ebay_3\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Ryco breather filter\",\nfu_ebay_query : \"Ryco breather filter\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 3,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_3.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Oil Filter Housing Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Another common leak source is the oil filter assembly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil around filter housing<\/li>\n\n\n\n<li>Oil running down engine block<\/li>\n\n\n\n<li>Drips after oil changes<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Incorrect filter installation<\/li>\n\n\n\n<li>Damaged sealing rings<\/li>\n\n\n\n<li>Housing gasket failure<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Regular inspection during servicing helps prevent these leaks.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Oil Filter for Holden Red Motors<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Ryco Z30 Oil Filter<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Proven quality<\/li>\n\n\n\n<li>Excellent filtration<\/li>\n\n\n\n<li>Correct fitment<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>149 engines<\/li>\n\n\n\n<li>179 engines<\/li>\n\n\n\n<li>186 engines<\/li>\n\n\n\n<li>202 engines<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_4\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 4 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_4\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Z30<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_4 = null;\nvar waitForDepends_fu_ebay_4 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_4);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_4 = jQuery(\"#fu_ebay_4\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Z30\",\nfu_ebay_query : \"Ryco Z30\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 4,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_4.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Best Oil for Red Motors with Minor Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The correct oil can sometimes help reduce seepage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Penrite HPR 30 20W-60<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High zinc formulation<\/li>\n\n\n\n<li>Suitable for older engines<\/li>\n\n\n\n<li>Helps maintain oil pressure<\/li>\n\n\n\n<li>Designed for classic vehicles<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High-mileage engines<\/li>\n\n\n\n<li>Weekend cruisers<\/li>\n\n\n\n<li>Original Holden sixes<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_5\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 5 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_5\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Penrite HPR 30 20W-60<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_5 = null;\nvar waitForDepends_fu_ebay_5 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_5);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. 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The good news is that most leaks originate from simple components such as rocker cover gaskets, side cover seals, timing covers or sump gaskets, all of which can be repaired relatively easily.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Products such as Permaseal gasket kits, Ryco filters, Penrite oils and Permatex sealants can help eliminate many common leaks while improving reliability and cleanliness. By identifying the true source of the leak and repairing it properly, most Holden owners can dramatically reduce oil loss and keep their engine bay looking tidy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A dry Holden Red Motor might not be completely factory-correct, but it&#8217;s certainly easier to live with.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Articles<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/17\/holden-red-motor-149-179-issues-explained\/\" type=\"post\" id=\"7232\">Holden Red Motor 149 &amp; 179 Issues Explained<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/17\/holden-red-motor-cooling-system-problems\/\" type=\"post\" id=\"7234\">Holden Red Motor Cooling System Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/17\/holden-red-motor-radiator-upgrade-guide\/\" type=\"post\" id=\"7236\">Holden Red Motor Radiator Upgrade Guide<\/a><\/li>\n\n\n\n<li>Best Oils for Early Holden Engines<\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/17\/eh-holden-transmission-problems\/\" type=\"post\" id=\"7238\">EH Holden Transmission Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hd-holden-steering-system-repair-guide\/\" type=\"post\" id=\"7259\">HD Holden Steering System Repair Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/how-to-inspect-an-early-holden-before-buying\/\" type=\"post\" id=\"7193\">How to Inspect an Early Holden Before Buying<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If there&#8217;s one thing almost every Holden enthusiast has experienced, it&#8217;s walking into the garage and finding a small puddle of oil under their Red Motor. Whether it&#8217;s a 149, 161, 173, 179, 186 or 202, the legendary Holden Red Engine has earned a reputation for durability, reliability and simplicity\u2014but it has also become known [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":569,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-7247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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