I will be running a troyer tuned xcal2 with 92 octane tunes.

My question is, the gas station I always get gas at has 2 different 92 octanes. One is premium 92, and the other is non-oxygenated 92. The non-oxy stuff is 4 cents more a gallon. Really not that big of a deal.

Which one would be better to use use?

Thanks
Rock Krusher

 

i use vp oxygenated fuel in my 4 stroke race bikes- it produces more power than when i run 115 leaded gas- and it's only 100 octane- it's the oxygenation that makes the power!

 

oxygenated fuel is winter-blend, stay away if possible


Protection Agency data. show oxygenated fuel lowers vehicle fuel. mileage about 2%

 

Hi Rock Krusher,

Definitely go for the non-oxygenated pump fuels - you will get better fuel mileage, as well as power & performance, due to the higher energy content.

Now in some *racing* fuels, they can be oxygenated in a way that adds power, but for pump fuels, it's just the opposite, it's not desirable - it's just the oil companies dumping in whatever oxygenating agent is the cheapest for them to use, and in some cases, hazardous products that they can get rid of that way, making it very convenient for them - like MTBE, which was outlawing in California first, some time back. Oil companies do this to the point that there are actually laws mandating what time of the year oil companies can no longer distributed those winter blended fuels - in some areas it's May 1st, in other areas it's different.

SO just as a general rule of thumb, in pump fuels, steer clear of oxygenated fuels if at all possible.

 

thanks for the info mikey-in the vp ultimate 4 i use - the oxygenation makes the power-by the way
281 miles from here to your shop
please email me or post on your dyno day at new shop,i want to be first on it, awaiting an opening for the exhaust to be done-checked out the exhaust shop- mandrell & stainless[has done several fords this way- nnever with x though,i'd like to do some datalogging on mine as well- well thanks mike see ya soon!-phil