What Is the Function of a Truck’s Coolant System? On-the-road service is overpriced and time-consuming, and while learning to fix it yourself can take a little practice, we’re here to help. Your truck’s coolant system is a closed system that exists to keep the engine cool and running at optimum temperatures. It also keeps other components of your truck cool, mainly the after-treatment system. (That’s not technically part of your engine – it’s your exhaust, so to speak. The after-treatment “treats” the exhaust that’s leaving your engine.)Ĭoolant is also used to heat the interior of your cab. When you turn on your heater and hot air blows out, you can thank your coolant system. There are at least 2 different kinds of coolant. They’re green and red, and they both smell about the same. They’re good for different temperature ranges. In your car, you probably use green antifreeze. For our trucks, we only use the red coolant. Just about everyone now uses red coolant with semi trucks. We say this to let you know that when you’re looking for a coolant leak, it could potentially be green or red. Note: It’s very important that you never mix red and green coolant! If your coolant reservoir has red coolant, do not add green coolant and vice versa. How Coolant Is SoldĬoolant is sold as “pre-mixed” or as concentrate. There may be different levels of concentrate, but the one that we buy for our trucks is a 50/50 mix. For every gallon of the concentrate, you put in one gallon of water. You have to add water as well! Preventing Coolant System Issues Tip: If you’re running low on coolant, and you’re just trying to get to a safe place, you don’t want to fill your reservoir with straight concentrate. Let’s say you don’t have any leaks, and there are no coolant system issues – you’d think you’re golden, right?Ĭoolant breaks down over time, and it’s recommended you replace it just like you would oil in your car. The difference is that oil gets dirty, and coolant actually breaks down. That just means that coolant doesn’t have the same properties that it once did, rendering it less effective as time goes by. You should definitely change your coolant at least once a year. Here are a few tips to make sure you don’t get hurt when addressing a coolant system leak: Staying Safe When Fixing a Coolant System LeakĪs always, staying safe is the most important thing, so safety tips first! Coolant is like oil – it breaks down and loses its alkaline level over time.Never open the system when it’s really hot. It provides superior diesel engine protection against freezing, boil-over, cavitation, liner pitting, erosion, corrosion, elastomer gasket degradation, and scaling.Wait until it cools down to a reading of 160 or 170 on the gauge. OAT Extended Life Antifreeze/Coolant utilizes patented organic acid technology. It is our answer to the maintenance demands of heavy duty diesel cooling systems OAT may be used with non-chemical Extended Service Interval (ESI) water filters. OAT (Organic Acid Technology) is a Life-of-the-Engine organic additive fully formulated extended life Ethylene Glycol (EG) antifreeze/coolant. Red Antifreeze for HD Diesel Engines 55 gal Price: $499.00/55 Gallon Drumĥ0/50 Prediluted Extended Life Heavy Duty Antifreeze/Coolant is formulated for all heavy duty diesel trucks. Spirax S4 TXM Tractor Transmission Hydraulic Oil Replacement.Tonna S2 MX 68 Slideway Oil Replacement.Mobiltherm Heat Transfer Oil Replacement.
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