Check Price on Amazon VP Racing is best known for its racing fuels ... including diesel engines (don't use a gas engine-only injector cleaner in a diesel, though). The process is controlled ...

Fuel injectors can get gummed up with dirt and fuel residue over time. Photo credit: David Traver Adolphus / Autoguide ...

Perhaps the automaker’s best diesel engine ... The Common Rail injection system feature produced more efficient and cleaner combustion that pushed the engine to the top of the diesel ranking.