Fuel injectors can get gummed up with dirt and fuel residue over time. Photo credit: David Traver Adolphus / Autoguide.com. Over time and miles, your car might start to slow down. It might not ...

We may receive a commission on purchases made from links. If you spend any amount of time at an auto parts store, you've surely seen the wall of chemicals, additives, unguents, and potions claiming to ...