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Your cart is empty.Zerex Heavy Duty Extended Life Antifreeze/Coolant from Valvoline is formulated to meet the harsher demands of heavy-duty diesel engines such as Cummins, DDC, MACK, Navistar, Paccar and Volvo. It can also be used in gasoline engines, stationary power, marine, natural gas and light duty applications. Our Organic Acid Technology (OAT) is charged with special inhibitors to help extend the longevity of your engine by protecting internal parts from pitting, cavitation, corrosion and hard-water scale deposits. Developed with the highest-quality virgin ethylene glycol, it’s able to prevent freezes and boil-overs. And it’s guaranteed to perform for up to 3 years, 30,000 miles or 7,000 hours of operation with no supplemental coolant additives required when used in conformity with package and label instructions and specifications. When it comes to protecting and prolonging the performance of your heavy-duty engine, trust Zerex for the long haul.
Claydog
Reviewed in the United States on February 18, 2025
Use it for my caterpillar skid steer works perfectly
roberto. hernandez
Reviewed in the United States on September 25, 2024
No prat all
jim
Reviewed in the United States on August 18, 2024
Zerex antifreeze running it in my semi truck will see so far so good!!
markis jay greif
Reviewed in the United States on November 5, 2024
I have a few diesel trucks and I use this coolant for all of them it helps prevent electrolysis with is important and it makes it easy to find a leak if you have one
Stevie Jo
Reviewed in the United States on October 23, 2024
Good packaging, on-time delivery, competitive price.
Timothy Joseph Llanes
Reviewed in the United States on September 8, 2023
auto
AFelix
Reviewed in the United States on February 7, 2021
As advertised
Big-D
Reviewed in the United States on October 24, 2014
While preparing to do a Radiator Flush on my '03 Ford Power-stroke 6.0 Diesel, I looked high and low for the specialized Coolant formulated for Diesel Engines and Cast Iron Blocks. I didn't want the premixed stuff so many companies are now only offering. I prefer to mix my own, that way I know what I'm putting in my expensive Diesel motor. It seems companies are offering premixed coolant only to make more money from us, the customer. After all, do you really know what mixture you are getting?When I mix my own making a 50/50 mix of antifreeze and distilled water, I know I am getting exactly that. And because the straight stuff is only a couple dollars more than the premix, you are getting way more for your money. Coolant of any type is not cheap by no means anyway, why pay what comes out as $4-5 per gallon for distilled water that you can buy for as little as .89 cents at the local market.In the long run, you make out better buying and mixing your own anti-freeze coolant. Plus when you buy in by the case, you have plenty left over for another flush years down the road. This Zerex is made for Diesel engines and certified by CAT EC-1, which regardless of color, if your coolant is going into your Diesel Engine, it better say CAT EC-1 somewhere on the bottle or don't use it in your 20k motor.
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