[Hemidude23]

i was wondering what kinda gas u all use i have a 5.7 r/t and my freind said he put regular then goes to autozone and get the like high boost liqued or sometimes the Nos **** and put it in the gas take does tht make a diff? do any 1 of u guys do that or what u use? any change in performance

 

[SupremeG]

I use Plus grade, 89 octance. You can use 87, but I'd rather not use 87 for too long on an R/T. I used to buy Techron in the bottles you get at Autozone to help clean the engine on my old car, but with these engines your not supposed to use any fuel additive.

 

[Aremel]

No. Use the octane recommended for your car. It will perform as it's supposed to.

 

[zoomzoom1]

89 octane!!!!!!

 

[Hemidude23]

i get regular thts what the dealer told me to use but i was wondering if those oct things really do n e thing

 

[SupremeG]

89 is recommended from Dodge, as it says in the manual.

 

[metgo]

I've been using 93 for the last few weeks preparing for diablo. Prior to that I was using 91 with my flashpaq. Using higher octane doesn't help you unless you are tuned for it.