When you cut to the basic principles of heavy-duty trucks it comes down to return on investment: maximum mpg, meeting emissions requirements and the truck running at optimum conditions and ...

Hagerty Media reader DUB6 writes: Sajeev, I’m going to turn your high-powered investigative prowess onto a topic that might be appropriate, since warmer weather is right over the horizon. Some of us ...

Q: I had the radiator serviced on my car, just preventive maintenance. I noticed on the repair invoice that I was charged for a cooling system additive. When I asked about it, the cashier said they ...

Some vehicle manufacturers specify a cooling system additive, which is often a type of stop-leak. A key stuck in the ignition of a Subaru Forester is often caused by a faulty switch at the base of the ...