J James D Guest Jun 29, 2008 #1 i hear that cadillac's 97-2000 have some type of computer in them that can tell if it's running on regular or premium and it will tune the spark plugs to run off that type of gas is this ture
i hear that cadillac's 97-2000 have some type of computer in them that can tell if it's running on regular or premium and it will tune the spark plugs to run off that type of gas is this ture
