I am a new owner of a 1994 J30 with 86K miles. I love the car! Any thoughts on whether it is necessary to use premium gasoline? With a 20+ cent price differential I would not mind saving the $ but not if it will adversely affect the engine.
My 93 J30t is finiky as hell. I tried regular and it did not like it at all. Kinda sputtered when I accelerated. Went back to premium and have not tried that again!