Harmon Performance Blog
Transmission Fluid 101: How Driving Style Changes Service Intervals
Two drivers can own the exact same truck, put on the exact same mileage, and still need a completely different transmission fluid conversation. One drives mostly steady highway miles. The other sits in traffic, runs short errands, tows on weekends, or hauls for work....
Diesel Work Trucks and Harvest Season: Keeping Your Drivetrain Alive in the Fields
If your diesel truck only vibrates, clunks, or shifts hard when a trailer is attached, that isn’t just a harvest-season annoyance. It’s useful information. The condition that triggers the problem can tell you whether the truck needs attention before the next loaded...
Fall Car Care: Transmission Tasks to Tackle Before the First Snow
The first snow is a bad time to learn that a shift delay, small leak, or vibration wasn't going away on its own. Fall gives you a window to catch these things while you still have time to deal with them on your own schedule, instead of during a cold commute or a busy...