I have been running Reg 87 Oct since I got the car a yr ago! It is the 4.2 V8! The day I bought the car I filled with Reg and I had to drive it back home and climb a Mtn. pass! The car never pinged or felt down on power. I do put in a can of SeaFoam in the tank once a mo. to clean up the sys. After a yr. still runs smooth as silk!


Smokie