{"id":7391,"date":"2026-06-14T12:06:07","date_gmt":"2026-06-14T12:06:07","guid":{"rendered":"http:\/\/australianholden.com\/?p=7391"},"modified":"2026-06-21T11:50:14","modified_gmt":"2026-06-21T11:50:14","slug":"vk-vl-commodore-rust-problems","status":"publish","type":"post","link":"https:\/\/australianholden.com\/index.php\/2026\/06\/14\/vk-vl-commodore-rust-problems\/","title":{"rendered":"VK &amp; VL Commodore Rust Problems"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Rust is one of the most serious issues affecting VK and VL Commodores today. While both models are popular among enthusiasts\u2014especially the VL Turbo and VL Calais\u2014corrosion is often the deciding factor between a good project car and one that is too far gone to restore economically.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The VK (1984\u20131986) and VL (1986\u20131988) Commodores were built during a period when rust protection was improving but still not at modern standards. As a result, moisture, dirt traps and factory seam sealer breakdown have led to predictable rust patterns across these vehicles.<\/p>\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;VK VL Commodore<\/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 : \"VK VL Commodore\",\nfu_ebay_query : \"VK VL COmmodore rust\",\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\">Why VK &amp; VL Commodores Rust<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Rust occurs when steel is exposed to moisture and oxygen over time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Contributing Factors<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Age (35+ years old)<\/li>\n\n\n\n<li>Poor factory seam sealing<\/li>\n\n\n\n<li>Blocked drain points<\/li>\n\n\n\n<li>Previous accident repairs<\/li>\n\n\n\n<li>Exposure to coastal environments<\/li>\n\n\n\n<li>Worn weather seals<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">VL Commodores, in particular, are highly vulnerable due to age and popularity.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Common Rust Areas in VK &amp; VL Commodores<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. Front Guards <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Front guards are one of the first areas to rust.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bubbling paint near wheel arches<\/li>\n\n\n\n<li>Rust around indicator mounts<\/li>\n\n\n\n<li>Inner guard corrosion<\/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>Mud and water trapped inside<\/li>\n\n\n\n<li>Stone chips exposing bare metal<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. Door Bottoms<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Door rust is extremely common.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blistering paint along lower edge<\/li>\n\n\n\n<li>Rust flakes when doors are opened<\/li>\n\n\n\n<li>Swollen door seams<\/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>Blocked drain holes<\/li>\n\n\n\n<li>Moisture trapped inside door cavities<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This is one of the most frequent rust issues on VL Commodores.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Boot Floor<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The boot area is highly prone to hidden rust.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Damp carpet in boot<\/li>\n\n\n\n<li>Rust around spare wheel well<\/li>\n\n\n\n<li>Soft or perforated metal<\/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>Water leaks from tail lights or boot seals<\/li>\n\n\n\n<li>Condensation buildup<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. Windscreen Surrounds<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both front and rear screens are major rust points.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bubbling around window trims<\/li>\n\n\n\n<li>Water leaks into cabin<\/li>\n\n\n\n<li>Visible corrosion under rubber seals<\/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>Deteriorated rubber seals<\/li>\n\n\n\n<li>Poor previous windscreen installations<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. Rear Wheel Arches<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Wheel arches suffer from constant exposure to debris.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rust bubbling on outer arches<\/li>\n\n\n\n<li>Inner arch corrosion<\/li>\n\n\n\n<li>Paint lifting near lip edges<\/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>Stone chips<\/li>\n\n\n\n<li>Dirt and moisture accumulation<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">6. Floor Pans<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Floor rust is often hidden until carpet is removed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Damp carpet<\/li>\n\n\n\n<li>Holes under seats or footwells<\/li>\n\n\n\n<li>Soft metal when pressed<\/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>Water leaks from firewall or windows<\/li>\n\n\n\n<li>Blocked drain channels<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This can become a major structural issue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. Firewall and Engine Bay<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Engine bay rust is less common but still important.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rust near battery tray<\/li>\n\n\n\n<li>Corrosion around brake master cylinder<\/li>\n\n\n\n<li>Surface rust on strut towers<\/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>Battery acid leaks<\/li>\n\n\n\n<li>Brake fluid damage<\/li>\n\n\n\n<li>Moisture exposure<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">8. Boot Lid and Bonnet Edges<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hinges and edges are rust hotspots.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bubbling paint along edges<\/li>\n\n\n\n<li>Rust near hinge mounts<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<h1 class=\"wp-block-heading\">VK vs VL Rust Comparison<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">VK Commodore<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Generally slightly better corrosion resistance<\/li>\n\n\n\n<li>More durable paint systems<\/li>\n\n\n\n<li>Still suffers from door and floor rust<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">VL Commodore<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>More prone to rust due to age and popularity<\/li>\n\n\n\n<li>Turbo models often heavily modified<\/li>\n\n\n\n<li>Many examples have hidden repairs<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">VL Commodores require extra inspection attention.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Hidden Rust Areas to Check<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Some rust is not immediately visible.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Always Inspect<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Behind interior trims<\/li>\n\n\n\n<li>Under carpets<\/li>\n\n\n\n<li>Inside rocker panels<\/li>\n\n\n\n<li>Around windscreen seals<\/li>\n\n\n\n<li>Inside doors and guards<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Rust often starts internally before showing externally.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">How to Inspect for Rust Before Buying<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1: Check Lower Body Panels<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Look for bubbling paint or uneven surfaces.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2: Inspect Door Bottoms<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Open doors fully and inspect inner seams.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 3: Check Boot Floor<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lift spare wheel and carpet.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 4: Inspect Under Carpet<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Look for dampness or softness.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5: Check Windscreen Seals<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Look for rust staining or lifted rubber.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Repairing VK &amp; VL Commodore Rust<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Minor Surface Rust<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sand back affected area<\/li>\n\n\n\n<li>Treat with rust converter<\/li>\n\n\n\n<li>Repaint and seal<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Moderate Rust<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cut out affected metal<\/li>\n\n\n\n<li>Weld in repair panels<\/li>\n\n\n\n<li>Refinish properly<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Severe Rust<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Full panel replacement required<\/li>\n\n\n\n<li>May involve structural repairs<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Professional panel beating is recommended for structural rust.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Rust Prevention Products<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Fish Oil or Lanolin-Based Rust Proofing<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Penetrates seams<\/li>\n\n\n\n<li>Protects internal cavities<\/li>\n\n\n\n<li>Long-lasting protection<\/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>Door interiors<\/li>\n\n\n\n<li>Chassis rails<\/li>\n\n\n\n<li>Guard cavities<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Wax-Based Cavity Protection<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Seals moisture out<\/li>\n\n\n\n<li>Long-term corrosion prevention<\/li>\n\n\n\n<li>Ideal for restored vehicles<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Preventing Rust in VK &amp; VL Commodores<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Keep Drain Holes Clear<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Prevents water buildup.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fix Leaks Early<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Even small leaks cause major rust over time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Store Indoors<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reduces moisture exposure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Regular Cleaning<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Removes dirt that traps moisture.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Are VK &amp; VL Commodores Rust Prone?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Yes\u2014rust is one of the biggest issues affecting these models today. However, the severity depends heavily on storage history, repair quality and maintenance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Well-preserved examples can still be found, but most vehicles will require some level of rust repair or prevention work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VK and VL Commodores remain highly desirable classic Holdens, especially turbocharged VL models. However, rust is the single most important factor affecting value and usability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Door bottoms, floor pans, wheel arches and windscreen surrounds are the most common problem areas, and thorough inspection is essential before purchase.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With proper rust repair and preventative treatment, these Commodores can still be preserved and enjoyed for many years. However, neglecting corrosion issues can quickly turn a promising project into an uneconomical restoration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For buyers and restorers alike, understanding VK and VL rust patterns is critical to making informed decisions and protecting one of Holden\u2019s most iconic model generations.<\/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\/16\/early-commodore-electrical-problems\/\" type=\"post\" id=\"7368\">Early Commodore Electrical Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/how-to-inspect-an-early-commodore-before-buying\/\" type=\"post\" id=\"7348\">How to Inspect an Early Commodore Before Buying<\/a><\/li>\n\n\n\n<li>Best Rust Prevention Products for Classic Commodores<\/li>\n\n\n\n<li>VL Commodore Turbo Buying Guide<\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/early-commodore-interior-restoration-guide\/\" type=\"post\" id=\"7374\">Early Commodore Interior Restoration Guide<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rust is one of the most serious issues affecting VK and VL Commodores today. While both models are popular among enthusiasts\u2014especially the VL Turbo and VL Calais\u2014corrosion is often the deciding factor between a good project car and one that is too far gone to restore economically. The VK (1984\u20131986) and VL (1986\u20131988) Commodores were [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":588,"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-7391","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 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VK &amp; VL Commodore Rust Problems - Australian Holden<\/title>\n<meta name=\"description\" content=\"rust is one of the biggest issues affecting these models today. 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