Can injector cleaner be safely used in fuel for ‘99 DeVille with North Star engine? I am getting opposite info from 2 Cadillac dealerships.
My 99 DeVille is starting hard when engine or even ambient temperature is
warm. Have push accelerator to floor before it will start. One Cadillac dealer
says to put Lucas or similar cleaner in the gas; a 2nd Cadillac dealer says
cleaner fluids will fuin the North Star engine. Anyone have experience with
cleaner fluids in a North Star engine? Could this problem be the starter or
thermometer? It’s the only car I have & can’t afford another; help!!