Quote:
Originally Posted by 10/10ths
..is hydroscopic--it absorbs water.
If you have a reliable supply of pure gas, even if it is a couple octane points lower, run it.
Your knock sensor will detect the lower octane and pull ignition timing, so no damage will occur. You will only notice the torque drop, if you notice it at all, below 2,000 rpm.
Ethanol is just bad.
Run Shell pure gas if you can, or buy some pails of "T4" from VP Racing Fuel
Here:
https://vpracingfuels.com/product/t4/
I've run this in my Boxster, Ducati Monster with hi-comp pistons, RC51, and GSX1250FA. They love it.
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I think this juice might be the same as a product called KARTANE. It had a splash of Methanol. I used it when Karting. Unusual exhaust smell!
What I am running in my PBS is Shell's 93 E Power, and the Shell Diesel which has the highest Cetane which is around 48. Adding Power Service in the diesel fuel also helps boost the power.