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Toll Free: 800-832-7278
Local Phone: 410-685-4474
2723 Annapolis Road
Baltimore, Maryland 21230


Semi-truck Coolant System: How to Maintain Yours

When you top off your fluids, ensure you use a 50/50 mixture of coolant and water.

Your semi-truck has a lot of moving parts, both literally and also figuratively – there’s a lot to stay on top of to keep it in good shape. You have to make sure that you’re getting your routine maintenance done, keeping your truck clean, and checking yourself wheels and fluid levels regularly. One of those fluids is your coolant, the liquid responsible for keeping your engine from overheating. The semi-truck coolant system is a hugely important part of your truck, so keeping up with its maintenance is vital. Read on to learn more.

When You Top It Off

Occasionally you will need to top off your coolant without doing a full system flush. When you do, make sure that you’re using the right type and mix of coolant. First, make sure that you’re using the correct coolant for your semi-truck and for your driving conditions. There are differences between brands as well, so if you’re not sure, ask your mechanic. Next, when you top off your fluids, make sure that you’re using a 50/50 mixture of coolant and water. You should not top it off with straight coolant (or straight water) since this will alter the viscosity of the fluid and may make it not work as well. Additionally, don’t use just any tap water either. Make sure that you’re mixing your coolant with highly purified and deionized water. Water that has been treated, such as with a water softener, could leave sodium behind in your coolant system that will cause corrosion. 


When You Replace It

Next, when it is time to flush out your coolant system and completely replace the coolant, make sure that you are doing it right. Talk to your mechanic about the correct type of flush and how regularly you should have it done, and then stick to that schedule. Make sure that the system is drained to the manufacturers specifications (this is best done by a professional mechanic) and that the coolant is replaced with the proper type. Finally, between flushes, make sure that you’re testing your coolant system to make sure that it is operating correctly, especially before you head out on super long hauls. The biggest thing you need to regularly check is the coolant levels of your semi-truck (and top off if necessary), but you should also talk to your mechanic about a tool for checking the viscosity of the coolant so you can stay on top of that.


Baltimore Freightliner-Western Star for all Your Trucking Needs!

Whether you are looking to upgrade your fleet to tow trucks or simply interested in the latest trucking technology, you can rely on Baltimore Freightliner-Western Star. We have provided top-notch service for the trucking industry for 30 years and would love to assist you in buying a new top-of-the-line truck, finding the specialty parts you need, or repairing your truck. Give us a call toll-free at 800-832-7278 or locally at 410-685-4474, or contact us online. To find out more about what we are up to, follow us on FacebookTwitter, and Pinterest.

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Baltimore Freightliner-Western Star is an award-winning, authorized dealer for new and used medium-duty and heavy-duty Freightliner and Western Star trucks and Sprinter Vans. We also provide expert service repair for Detroit Diesel, Cummins, Caterpillar, and Mercedes-Benz engines.
2723 Annapolis Rd