Top car mechanic Scotty Kilmer has opened up on the one affordable additive that garages "don't want” drivers to know about.

The traditional fix for a leaking main seal is to replace it, but because of the typically high labor cost some vehicle owners use oil additives designed to restore seals. In some cases ...

I inserted a stiff wire into the rubber tubing for my DIY kit, but for $12.47, the oil level kit linked above will be tough ...