What grade gas do you use??

[tim721]

I have always been using super unleaded. A friend of mine says i'm wasting $$$ & that i should just fill it with 87.

I will continue using 92 or 93 regardless, but would 87 hurt the engine?

 

[IEATVETS]

Look at the owners manual, I believe it says 89 or higher. I always fill mine with at least 90 or higher.

 

[99 R/T 10]

NEVER anything lower than 91. Even that is too low IMHO.

 

[Rollin4]

NEVER anything lower than 91. Even that is too low IMHO.

DITTO...at least 91..unless your care to detonate a V10.

 

[Gerald Levin]

Isn't it clearly printed on one of the guages to use premium gas only?

 

[Don Hiltz]

In an article in "USA Today", which appeared last Fall, the issue of gasoline octane rating was addressed. The chief engineer at Volvo was quoted as saying that most automobiles, even those whose manufacturers recommend premium grade fuel, can perform well with 87 octane gasoline. He stated that the only reason to purchase a higher octane was if detonation was noted.

On one occasion, I was forced to use 87 octane and noted no obvious loss of performance nor detonation.

However, as a disclaimer, I must say that I continue to routinely buy 93 octane.

Don

 

[SUN RA KAT]

93 octane for regular Vipering and 94 octane for track events with the appropriate VEC2 card, of course.

 

[1MEANSNAKE]

I run 94 Octane at all times whenever possible and nothing ever less than 93. Thank god for our local Sunoco Stations

 

[GoldMan]

My gas cap cover has a big label that CAUTIONS: "Use premium unleaded ONLY".

I've always used premium / 93 octane minimum in any performance car !!

 

[DodgeViper01]

Same here. Used 93 all the time and 94 once. Did not notice much of a difference.

 

[ChoiceViper]

I've only used crappy california 91 octane.

 

[ViperGTS]

SuperPlus - 98 octane!

 

[JWVIPER]

Can't find 94 any more in NY 93

 

[MaxedGTS]

93 octane or better. always good to use good fuel. NOt so much the octane, but the gas.

 

[Magicboy2]

Your buddy is ignorant.

 

[BigCarrot]

Our high compression engines need the higher octane. You ARE wasting money by using premium in a car that doesn't require it. I use 93, and 114 when I'm using the nitrous.

 

[MoparMan]

I've only used crappy california 91 octane.

That's all we get here in Vegas too (unless you mix in some of the 100 octane stuff from Unocal).

 

[gthomas]

Higher octane fuel will be beneficial in any car. The higher octane fuels have additional additives that help the engine burn the fuel more efficiently and 'clean' the engine(87 vs. 92/3). Lots of studies. Basically the last one done locally, the woman used only 87 octane, vs. a user of 92/3. The 87 octane had a higher build up of deposit, resulting in higher maintenance costs, also lower fuel economy, etc.. The 92/3 had cleaner injectors/manifold, got better gas mileage, etc.. Of course the Amoco on Beach by the S/S overpass carries 100 octane.

 

[BOMBOVIPER93]

I only use 93 or 94 too, BUT didnt it say not to use anything OVER that in one the last issues of VIPER magazine in the tech section? ie: amoco 100, Turbo Blue or cam 2

 

[FFVIPER]

i was using sunoco 94. now i use sunoco 93 because they dont have the 94 anymore.

 

[ABADASP]

My Gen 1 car pinged very bad at WOT with 91 octane but not with 93 octane. I only use 93 now unless not available. Some times I have to drive 20 miles to get 93 as it is not always available where I live.

 

[96 GTS]

93 octane all the time. No problems.

 

[Neil - UK]

95 or 97, european octane ratings are different for some reason to USA ratings

 

[GTS Bruce]

Mobil 93.Doesn't sunoco use 10% alcohol in their gas.Our dodge ram 5.9 and durango 4.7 are supposed to run on 87.On 87 they do some pinging so we use 89 in them.They run noticibly better on 89.Too bad dodge doesn't use knock sensors to optimise timing in their vehicles. Bruce

 

[pdmracing]

Higher octane fuel will be beneficial in any car. The higher octane fuels have additional additives that help the engine burn the fuel more efficiently and 'clean' the engine(87 vs. 92/3). Lots of studies. Basically the last one done locally, the woman used only 87 octane, vs. a user of 92/3. The 87 octane had a higher build up of deposit, resulting in higher maintenance costs, also lower fuel economy, etc.. The 92/3 had cleaner injectors/manifold, got better gas mileage, etc.. Of course the Amoco on Beach by the S/S overpass carries 100 octane.

on our 4 cylinder race engines(porsche) 10.7 comp showed no increase of power on the dyno with race gas vs 93 ammoco but a 15 degree lower exhaust temps, & the head & valves looks like it is brand new.So i still used the good stuff.
Butttttttttt on our the new Sunbelt built spec miata motor, when we were in for dyno tuning they yelled @ me for using 105, they said it was costing me 3 hp( on a small motor like that 3 hp is worth about 1k$!) they mixed it down with 93 , & said I was to use no more than 100 octane, who knew?