Responsible car ownership means checking your fluid levels at least once or twice a month. If you are a first-time diesel engine owner, you may wonder if it's safe to use regular coolant in your ...

Elizabeth Nelson, coolant program manager at Polaris Laboratories, a fluid-analysis company in Indianapolis, Ind., tells a story that would strike fear into the heart of any fleet manager. A class-8 ...

Head gasket failures can turn a dependable vehicle into an expensive repair project, but some engines have earned a ...

My 2016 Mazda CX-5’s diesel engine is creating pressure, forcing coolant into filler tank. When the coolant level in the radiator drops, the engine begins to overheat. The overheating is far from a ...