Diesel trucks are known for their incredibly reliable engines. At Harold's Used Auto Parts Inc in Philadelphia, we know that the key to a reliable engine is good maintenance. In fleet trucks, the difference between a truck that lasts a million miles and a truck that needs new engine hinges on how well it has been maintained.

It often doesn’t take much to keep a diesel engine maintained. Oil testing and oil changes are the most essential aspect of engine maintenance, especially considering the tendency of diesel engines to accumulate sludge. Filter changes should also be done regularly...the oil is only useful if it stays clean and unobstructed.

Vacuum checks are another simple but important maintenance item. Diesel engines rely heavily on a solid vacuum, which means a simple issue can seem like a much bigger problem. As hoses and connections dry rot and degrade, leaks pop up and cause trouble in a variety of ways, affecting performance and gas mileage. Typically, an inexpensive and quick fix, vacuum repairs are always worth making. If the problem isn’t so simple, don’t worry - we’ve still got you covered.

Our expert mechanics check and adjust valve clearances, timing chains, and any other in-depth maintenance your truck requires. Oil changes and inspections, clearance checks, pointed inspections, and other scheduled maintenance will keep your truck reliably on the road for years to come. For all your engine maintenance needs, call or come by Harold's Used Auto Parts Inc, Philadelphiais the top truck repair facility. We’ll keep you going!