VP Cool Down™ coolant additive is designed for gas and diesel engines and works with coolant or straight water systems. Its advanced formula reduces coolant surface tension for superior heat transfer and lowers engine temperatures by up to 30°F. Cylinder head temps can drop by as much as 75°F, helping to prevent overheating. Our coolant additive also lubricates vital components, including water pumps and seals, while safeguarding against corrosion and electrolysis of all metals, especially aluminum. It meets and exceeds ASTM D3306 specifications, making it the trusted choice for racing, street vehicles, RVs, and towing.
NOTE: Before using Cool Down for the first time, we recommend using Frosty Clean Cooling System Flush to optimize your cooling system's efficiency and maximize Cool Down's performance.
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Frequently Asked Questions
Q: Is my personal information kept private? Is it safe to use my credit card?
A: Yes, your personal information is kept private and it is safe to use your credit card.
Q: How much will shipping cost?
A: Unfortunately, the cost of shipping is a real expense. Our goal is to minimize your shipping costs. Shipping is calculated at checkout based on the items in your cart and will be displayed prior to you placing an order. Please note that oversized items may be subject to additional charges, which will be noted on the product page.
Q: How do I track my order?
A: Once your order ships, you will receive a tracking notification via email. You are not required to purchase, download or use the Route app to track your order - this is an optional feature of the Route Package Protection service.
Q: Can someone outside of the United States place an order?
A: Yes, we are happy to provide worldwide service for our customers. Your shipping charges will be calculated during the checkout process. Customs and duty fees are the responsibility of the buyer.
Blog posts
Read moreEverything that's new, everything that's leaving, and every detail we know so far
Read moreCorvettes at Carlisle returns August 27–29 with more than 4,000 Corvettes, America 250 displays, and Grand Sport #004 making the trip out of the Revs Institute. But Carlisle is the start of fall show season, not the end of summer. Here's the full calendar through November, the upgrades we'd have on the car before your next show, and photos from your fields.
Read moreThe 2027 Corvette is the story that keeps on giving right now — a brand-new engine, the return of a legendary name, and order books that are very much open. This week we'll put the 2027 highlights front and center, then run through the rest of what moved in the Corvette world. As always, this comes from folks who live and breathe these cars right alongside you.
