What octane do you put in your cars?

[Khoifather]

87, 89, 93???

 

[mountjonas]

87

 

[pr5owner]

110 race grade... im my dreams, but 83 in real life, im in canada so octane rating may be diffrent

 

[elfhearse]

Previous thread on this but the manual says 87 that's what I use. It's not a high compression engine so you don't need high octane (unless you stick a turbo on it). 93 would be a waste of $ (especially if you live in Cali....yow!!)

 

[Mike R]

87. No point in using higher grade. In my other cars I used 93-104, but one was turbo w/15+ psi and the other had the timing bumped to 18* static.

 

[ards]

87 since you don't race your car.

 

[hi-perf]

87

 

[stdntDrvr]

93 in both...but i'm running the MP3 ecu in my p5

 

[whitemp5seattle]

I use the regular unleaded (87). I don't have turbo so there's no use in using anything higher.

Using the "premium" unleaded with a higher octane rating doesn't give you any gains - it just means that the fuel burns at a higher temperature. In fact, it can even be damaging to your engine in the long run if you use an octane rating higher than what's recommended...plus it's money that could be spent on other things. (I.e. new exhaust, CAI, etc.)

 

[stdntDrvr]

but you need to run the high octane if you have the MP3 ecu in your p5.q

 

[whitemp5seattle]

yeah if that's what it asks for. Just pay attention to what the owner manual says...

Here's a link for more info:
http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm

Interesting article by the Federal Trade Commission, so you know it's reputable. Made me change my habits @ the gas station...

 

[stdntDrvr]

which it does...if you don't run it, you'll get a knock in the motor.

 

[whitemp5seattle]

cool. you're all set then...

 

[aftershock63]

94 all the time

 

[MisterT]

I know this is the P5 section and I own a sedan, but I put in regular unleaded. No need for anything else since I haven't any performance mods.

 

[Phoenix5]

87, I don't have a turbo(although I wish I did (lol2)).

 

[leungwingkei]

87, anything higher without higher compression or turbo will result in carbon deposits fouling spark plugs, cylinder walls, etc.

 

[viVid]

87

87, 89, 93???

 

[N2OInferno]

87

 

[atxpro5]

and i also roll hard with the 87