--- title: What is Truegard 308 Rust Preventative & Where Can You Use It? description: Keep rust and corrosion far away from your equipment with Truegard 308 Rust Preventative. image: https://info.kellerheartt.com/hubfs/AdobeStock_848965146.webp --- [![keller-heartt-oil](https://info.kellerheartt.com/hubfs/branding/keller-heartt-logo.200.png)](https://www.kellerheartt.com/) - Shop By Industry - [Trucking & Automotive](https://www.kellerheartt.com/collections/commercial-truck-supplies) - [Diesel Exhaust Fluid](https://www.kellerheartt.com/collections/diesel-exhaust-fluid) - [Motor Oil](https://www.kellerheartt.com/collections/motor-oil) - [Brake Cleaner](https://www.kellerheartt.com/collections/brake-cleaner) - [Antifreeze](https://www.kellerheartt.com/collections/antifreeze-coolants) - [Transmission Fluid](https://www.kellerheartt.com/collections/transmission-fluid) - [Machine Shops & Metalworking](https://www.kellerheartt.com/collections/metalworking-fluids) - [Cutting Oil](https://www.kellerheartt.com/collections/cutting-oil) - [Coolant](https://www.kellerheartt.com/collections/tool-die-coolants) - [Hydraulic Oil](https://www.kellerheartt.com/collections/hydraulic-oil) - [Soluble Oil](https://www.kellerheartt.com/collections/soluble-oil) - [Rust Preventative](https://www.kellerheartt.com/collections/tool-die-rust-veto) - [Industrial](https://www.kellerheartt.com/collections/industrial-products) - [Hydraulic Oil](https://www.kellerheartt.com/collections/hydraulic-oil) - [Industrial Gear Oil](https://www.kellerheartt.com/collections/industrial-gear-oil-all-sizes-brands) - [Multi-Purpose Grease](https://www.kellerheartt.com/collections/multi-purpose-grease) - [Cleaner & Degreaser](https://www.kellerheartt.com/collections/industrial-cleaners-descalers-degreasers) - [Ethylene Glycol](https://www.kellerheartt.com/collections/ethylene-glycol) - [Food & Beverage](https://www.kellerheartt.com/collections/food-grade-oils-lubricants) - [Propylene Glycol](https://www.kellerheartt.com/collections/propylene-glycol-drums) - [Cassida Fluid & Grease](https://www.kellerheartt.com/collections/cassida-lubricants-greases) - [Fuchs Gear Oil & Grease](https://www.kellerheartt.com/collections/fuchs-lubricants) - Shop By Brand - [Shell Products](https://www.kellerheartt.com/collections/shell-oil-lubricants) - [TRUEGARD Products](https://www.kellerheartt.com/collections/truegard-oil-lubricants) - [Blue DEF Products](https://www.kellerheartt.com/collections/bluedef) - [Oil Eater Products](https://www.kellerheartt.com/collections/oil-eater) - [Blog](https://info.kellerheartt.com/blogs) - [Request a Quote](https://www.kellerheartt.com/pages/request-a-quote) [Contact Us](https://www.kellerheartt.com/pages/contact-us) Truegard # What is Truegard 308 Rust Preventative & Where Can You Use It? [Brian McGrath](https://info.kellerheartt.com/blogs/author/brian-mcgrath) Dec 22, 2023 --- Protecting your metalworking parts from the relentless threats of corrosion and oxidation is crucial, especially during prolonged storage or international shipping. Think about it—your gears, lathes, and other machined parts are at risk, whether they're actively in use or in storage. Imagine the havoc that high humidity, salt, fertilizers, or extreme weather can wreak on those iron and steel surfaces. That's where Truegard 308 Rust Preventative steps in, becoming your knight in shining armor (literally) to preserve the longevity of your valuable assets. [Truegard 308 Rust Preventative](https://www.kellerheartt.com/products/truegard-308-rust-preventative-55-gallon-drum) is a light [mineral oil](https://www.kellerheartt.com/pages/search-results-page?q=mineral%20oil) that leaves a protective film on metal surfaces, specifically iron and steel, and contains powerful rust inhibitors. It is necessary to lift or displace water during storage to maintain metal surfaces. The product’s coating may be translucent in order to leave identifying markings visible on machined parts, or it may dry as a dark, tough coating. Truegard 308 Rust Preventative is beneficial for long-term storage because it can protect parts exposed to the outdoors for up to a year, even in harsh conditions, and it can work on indoor surfaces for up to three years. The possible applications of Truegard 308 Rust Preventative, depending on which brand and formula is used, are wide-ranging. Various Truegard 308 Rust Preventative products are great for machined parts used in steel mill equipment, [transportation](https://www.kellerheartt.com/collections/commercial-truck-supplies), outdoor farming, construction, and other [industrial](https://www.kellerheartt.com/collections/industrial-products) and [automotive](https://www.kellerheartt.com/collections/automotive-products) applications. Plus it’s just as easy to remove as it is to apply. Simply brush or spray it on and clean it off with a [petroleum solvent](https://www.kellerheartt.com/products/truegard-mineral-spirits-solvent-105-flash-point) or emulsion cleaner if needed.  All-in-all, Truegard 308 Rust Preventative is a worthwhile protectant–it’s such a simple way to lengthen shelf life and thwart damaging oxidation that can lead to compromised performance or expensive replacements. To view our complete selection of Truegard metalworking products, [click here](https://info.kellerheartt.com/truegard-metalworking-products).   [Truegard](https://info.kellerheartt.com/blogs/tag/truegard) [Grease](https://info.kellerheartt.com/blogs/tag/grease) #### FOLLOW AND SHARE: [![share on facebook](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/facebook-color.png?width=45&height=45&name=facebook-color.png)](https://www.facebook.com/pages/Keller-Heartt-Company/170082969671892?ref=hl) [![follow us on youtube](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/youtube-color.png?width=45&height=45&name=youtube-color.png)](https://www.youtube.com/channel/UCA9e_Yo_qd4PqpK2dDdgxaw) [![follow us on instagram](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/instagram-color.png?width=45&height=45&name=instagram-color.png)](https://www.instagram.com/keller.heartt/?hl=en) [![follow us on twitter](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/twitter-color.png?width=45&height=45&name=twitter-color.png)](https://twitter.com/KellerHeartt) [![follow us on linkedin](https://info.kellerheartt.com/hs-fs/hubfs/images/social/icons/linkedin-color.png?width=45&height=45&name=linkedin-color.png)](https://www.linkedin.com/company/keller-heartt-oil/)   ## Similar posts Aeroshell ### [Aeroshell W100 vs. W100 Plus​: The Ultimate Breakdown for Smarter Aircraft Engine Care](https://info.kellerheartt.com/blogs/aeroshell-w100-vs-w100-plus) Debating Aeroshell W100 vs. W100 Plus? Get the insider breakdown aircraft owners trust to choose the best oil for power, protection, and engine... Brian McGrath Dec 17, 2025 Coolant ### [Comparing Truegard® Propylene Glycol Vs. Dowfrost™](https://info.kellerheartt.com/blogs/comparing-truegard-propylene-glycol-vs-dowfrost) Truegard® Propylene Glycol is an affordable alternative to DOWFROST™. Here are some of the advantages of going with TRUEGARD from Keller-Heartt. Brian McGrath Jul 14, 2023 Truegard ### [Truegard Solvent 105 vs. Truegard Safety Solvent 142: Which One is Right for Your Cleaning Needs?](https://info.kellerheartt.com/blogs/truegard-solvent-105-vs.-truegard-safety-solvent-142-which-one-is-right-for-your-cleaning-needs) Compare Truegard Solvent 105 and Truegard Safety Solvent 142 to find the best fit for your industrial cleaning needs. Brian McGrath Sep 20, 2024 ## **Get the latest oil & lubricant industry insights** Subscribe to the Keller-Heartt blog so you can sharpen your industry knowledge, gather helpful tips, and stay informed about changes or updates in the oil provider landscape. ### Subscribe to Our Blog! © 2025 Keller-Heart Oil All rights reserved ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Brian McGrath", "url" : "https://info.kellerheartt.com/blogs/author/brian-mcgrath" }, "dateModified" : "2025-11-18T18:57:32.478Z", "datePublished" : "2023-12-22T14:40:00.000Z", "headline" : "What is Truegard 308 Rust Preventative & Where Can You Use It?", "image" : [ "https://info.kellerheartt.com/hubfs/AdobeStock_848965146.webp" ], "mainEntityOfPage" : { "@id" : "https://info.kellerheartt.com/blogs/what-is-truegard-308-rust-preventative", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://info.kellerheartt.com/hubfs/branding/keller-heartt-logo.350.png" }, "name" : "Keller-Heartt Co" } } ```