What Octane to run

pup55

pup55

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Mar 21, 2007
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Boylston Ma.
I know you guys are going to tell me to do a search on this and I already have and cannot find anything. What gas should I be running in my stock 03 viper ER.
 
i run 93 with 30% toulene in my 2000 srx 780 with full race porting no overheat issues or plug problem and perfect piston wash.gives you a true 98 octane As i have found with 104 race fuel causes my powervalves to become sticky no matter what oil you run and i still have great power .toulene i but it in 25 gallon drums which equals around 2.50 a gallon compared to regular octane boost which only raises the fuel to .1which is if you buy 93 your result is 93.1 compared to 10% toulene which is 94 so 9 gallons of 93 + 1 gallon of toulene is 94 compared to $7.00 a gallon for 104 + 50 mix
 
pup owners manual calls for 88 or higher octane where you get that i have no idea i would run 89 at all times if cheap run a little better 92 or somthing but a stock vipe shouldn't need anything higher...been seeing allot of burn downs with deto laity..

todays gas is shit,, so running a little higher grade just gives insurance.
 
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The reason I ask is when I went to fill up today they had no 88 but they had 87. Can I run 87 or am I better to run something higher?
 
owners manual calls for 88 or higher

pup55 said:
The reason I ask is when I went to fill up today they had no 88 but they had 87. Can I run 87 or am I better to run something higher?
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Run higher,, you can run 87(with no looong wot pulls)but IMO.......it's to risky..
 
also....

You can get detonation very easily from mid range cruse speeds(is where allot of burns down happen)with the help of crap gas.
 
Yeah, there is no reason to remove it, unless you like the taste of gas in your mouth.

Adding octane booster would be an easier method.

Today's gas is different than before. Some is better, with a higher grade base fuel, and some is worse, with a lower grade base fuel, and using the alcohol to raise octane. If you don't know what exactly you are getting, err on the side of higher octane.
 
Thanks horkn. Daman i finally had some time to put the picks in. I will keep the 87 in and change to 89 next time I fill up. My dealer also gave me some Star/Tron Enzyme fuel treatment and recomended 2 cap fulls in my Viper and 1 cap in my Apex every time I fill up do to the ethanol in the gas. He also said he has had alot of sleds in this year from blowing up.
 
pup55 said:
Thanks horkn. Daman i finally had some time to put the picks in. I will keep the 87 in and change to 89 next time I fill up. My dealer also gave me some Star/Tron Enzyme fuel treatment and recomended 2 cap fulls in my Viper and 1 cap in my Apex every time I fill up do to the ethanol in the gas. He also said he has had alot of sleds in this year from blowing up.
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so it's suppose to help with the ethanol huh??,,never heard of the stuff. :dunno:
 
This is what it will do


Ethanol / E10 fuels increase the amounts of water and sludge in your fuel tank.
Star Tron breaks down this excess water and sludge to sub-micron size allowing it to be safely burned away during normal engine operation.
Therefore Star Tron prevents phase separation and fuel gelling, eliminating ethanol fuel problems.
 
When I went and picked up my new Apex he gave me a bottle for both my sleds and said it would work great with the new gas. I think it was $14 for 8oz but will do 128 gallons of fuel. If you goggle it daman you should be able to find more information on it.
 
Respectfully disagreeing with knowledgeable folks who posted above . . .



I am convinced that the 87 octane fuel pumped at many of the gas stations where sleds commonly fill up is less prone to detonation than the 89 octane fuel at the same station. While the 89 octane may have started its journey to the pump with better resistance to pre-ignition than the 87, it has likely sat in the underground tank a lot longer due to lower sales volume.



For the most part, the fuel sold as 87 octane here in lower Michigan is quite adequate for a Stock Viper (in a good state of tune) in temps down to -20F, when it is delivered to the gas station. As long as the equipment at the station is good and the station turns the fuel over in a timely manner all is well. Remember that the octane rating you see on the pump is actually an average of 2 testing methods. Many knowledgeable folks suggest that it would be better to stick to one method or the other.



I only buy higher octane fuel when I am concerned about freshness of fuel. Sometimes when I am at a station that sells predominately to sleds, and they mostly seem to buy the higher octane stuff, I will as well. I never buy 89 octane, as I have yet to see a station where it is sold in any volume.



I am thoroughly convinced that it you are detonating a stock viper engine with fresh 87 octane fuel, then you have other issues with the engine and air/fuel supply system. Most of these types of problems are not minute enough in nature to where 93 octane will protect you.



Now for the Ethanol conversation, I am not yet knowledgeable enough to chime in. There may or may not be an issue with current fuel in some locations. I do not know.
 
So Ding if my book says 88 or higher and I cannot find 88 anywhere I live you think it would be ok to run the 87? I know where i live everyone is putting 87 in there cars and trucks and not 89 so I feel it is true in what you are saying. I would rather run 87 if I could if 91 or 93 is not going to help anymore than the 87. Your thoughts
 
I see what ding is saying but at any well populated sledding area with todays prices 89 and higher gas is being moved(bought)i see it all the time,now when gas was $4 yea i would say that but under $2 it's selling and the turn over is frequint.

your vipers pup has more comp then most cars on the road.
 
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