Drive Cooler

Experience the power of our cooler oil products designed for your ISX-X15's optimal performance.
Your ISX - X15 Oil Thermostat Replacement System Home of the Cooler Oil 1 & Cooler Oil 2. Is your trucks oil running 240+ degrees, making you feel uncomfortable? We've got the solution for you with our 100% Hand built, Stainless Steel, Tig welded Cooler Oil 1 & 2. That is built right here in the USA!! With our Oil Thermostat Replacement System not only do you get cooler oil, it also helps keep your coolant at a normal level so the fan isn't cycling constantly, your oil viscosity stays at a higher rate for a longer period of time. Our Patent Pending products are built to beat the heat!


Which one do I need?
Be sure to inspect your cooler to ensure you recieve the correct product! Feel free to contact us if you have any questions on fit! Most Aftermarket Coolers will use the Cooler Oil 1 !
Cooler Oil 1
Cooler Oil 1 - First taper towards front of the block is 3.5 inches it has 2 distinctive similar tapers.

Cooler Oil 2
Cooler Oil 2- has 3 7/8 inches tapers from the front of the block. the 2 tapers are not similar.

Our Story
Grizzly Specialized Inc is dedicated to providing exceptional cooler oil solutions for semi truck drivers. Our mission is to promote the benefits of oil cooling and ensure that all truck drivers experience improved engine performance and longevity. With our innovative products, we strive to contribute to a smoother and more efficient driving experience while extending the lifetime of your semi trucks. Find out more about our journey and commitment to excellence.
My name is Bryant Kruckenberg
I'm a hardworking man, dedicated to creating a high-quality product with unwavering attention to detail. One dedicated man working to craft a high-quality part for your truck. Our team is committed to providing you with the best possible product to ensure vehicle runs smoothly and safely. Trust us to deliver exceptional results everyday. As an owner operator for over 20 years, I have valuable experience and knowledge. I am dedicated to providing top-notch service to my clients ensuring their satisfaction. Let me put my expertise to work for you.

"Grizzly Specialized Cooler Solutions For Your Truck – Drive with Confidence!" All stainless steel construction, built right here in the U.S.A. Owner operators design for the owner operator.