IS IT SAFE TO USE 101 OCTANE UNLEADED?

Your question implies that you do not want to use the E10 fuels at your regular station, which you should be able to do with no harm to your car. The higher the octane number the more stable and compressable the fuel is. This leads to a car that is harder to start. As a rule of thumb, you want to use the lowest octane that you can without having pre-detonation.

Very high compression racing engines use higher octane for this reason as they need the fuel stability to avoid pre-detonation. Your Scuderia owners manual will tell you what octane range is acceptable for that engine. Hope this helps and congratulations on your purchase!

 

short answer, yes.

you should be able to find a race gas of 98 octane leaded as well which would work. I would imagine that a compromise mixture could work Ok of race/pump gas.

 

My question is: does all fuel have e-10? Is the race gas I can buy at a track mixed with ethanol?

 

So adding Ethanol to gasoline bumps ups the octane? Good news for turbochargers.

 

I can't speak for the Scuderia. But the Owner's Manuals for my '06 Pontiac GTO and my brother's '07 Z06 both say Not to use fuel containing ethanol. As noted above, that's getting hard to obey....

 

My Mondi T manual says to use 98 Octane. Its not available. The highest I can find at the regular gas pumps is 92/93. We too have the 10 ethanol blend. I have found one place that has the 101 octane and have mixed it with the 93 to get as close to 98 as i can. It runs much better. On long trips I usually just burn up the 93, without any issues. There is a noticeable difference in performance and sound of the engine using a higher octane. Note* I have noticed some black sooting on the tailpipes if i run straight 101 and use conventional oil. It may be too much to run straight 101 racing fuel. I now only use synthetic oil as well to prevent any oil breakdown.

Our 101 was only 4.99 gal until recently they finally closed it and won't sell it because it is too close to the price of everday fuel and they weren't making any money off if it. (my opinion as there are alot of us car nuts who use the stuff).


If my 1989 electronics can figure out the mix, I'm sure the newer computer driven F cars would easily make any adjustments.

 

Maybe the manual that states 98 Octane is in Ron (Europe), which is about 93 Octane ((RON+MON)/2) here in the US.

 

I used to fill my 348 up once every couple of months with 100 octane fuel from the Laguna Seca pit area pumps. It seems to perform a little better, but not lots. I burn it just to clean out the build up of carbon on the valves & pistons. A little pricey though at $7.50/gal so I don't go there as much now.