[Scargoes]

I never used Xylene, I had always used Toluene.

[TJay74]

Originally Posted by Heater

I am referring 91 being fine for someone with a warranty and not looking to void it. When you start adding xylene you are asking for trouble if issues come up/ not to mention if you get it on your paint :(.

Adding in E85 can have its downside especially since the OP does not want to void warranty (many downsides since he won't tune or get a FF sensor). Believe it or not 91 has been the standard in the southwest for awhile, although not ideal it is what you have and a stock LT1 will be fine. If you want to spend 6 dollars and mix gas for a few extra perceived horsepower or less knock
(lol once again your have your warranty, if you engine has serious issues with 91 vs 93 then that is a problem with the platform and gm should address/fix) to go to the store with, have at it and enjoy!

E85 will not void the warranty on its own, as several of us have mentioned. The stock tune is able to compensate up to E15. It is built into the OEM tune due to the amount of Ethanol pumps around the USA.

I never suggested Xylene or Toulene. I would run E85 mixed in with my gas or blend some 100 octane before I ran either of those.

Using E85 isnt hard to do even on an engine that doesnt have the E85 sensor. the 1st fill up you can add 2-3 gallons of E85 to pure 91/93. Then from there it takes 10 gallons to fill up at the half way mark, so you add in 1 gallon of E85 and the rest pure 91/93. This keeps the ratio at E10-E15.

Top it off there is another layer of protection as like most of us have posted, most E85 actually tests at E60-E65 during the winter months and maybe up to E75 during the summer months. Unless you have a race fuel location, most of them carry pure E85 and E100 ethanol products.

I am full E85 on my 17 Camaro SS with the full LT4 fuel system and a Procharger D1SC. I was running E85 before the supercharger. I also converted my 16 GMC Sierra 6.2 (L86) over to E85 as well and tuned it. I also throw E10-E15 into our 2019 Audi S4, with it being turbo charged it helps with keeping detonation at bay and helps with the performance from the factory single hotside turbo setup.

[95 imp]

Xylene is already a component of 91/93 pump gasoline, so it will be kinda hard to void any factory warranty. (Toluene is in pump gas as well).

Toluene is a good choice too. (It comes in at 114o vs 116.5o R+M/2). I think xylene is easier to get and might be a little cheaper currently.

And yes, just like gasoline, you don't want to get it on your paint.
But, it isn't acid and able to strip the paint off before your eyes.
All you have to do is blot off any that gets spilt just like gas.

[Aragorn]

May have have to get an e85 kit in the future. I’ve heard you’ll loose the burbles and popping though. Thanks everyone.

[95 imp]

Also, FWIW, I would check your knock sensors and see if they are pulling timing. If they are, raise the octane until they no longer hear knock. Too much octane is almost as bad as not enough. With my 95 LT1, it was recommended @ 87o. I had to run around 90o to keep it quiet.

Also like King said, 91 already has some alcohol on it. Try to blend in E and you're out of the ecm tables. It really needs the sensor to optimize it. And I'd be willing to bet running E would void the warranty (since it is over 15%) a lot easier than toluene/xylene.

[TJay74]

Originally Posted by 95 imp

Also, FWIW, I would check your knock sensors and see if they are pulling timing. If they are, raise the octane until they no longer hear knock. Too much octane is almost as bad as not enough. With my 95 LT1, it was recommended @ 87o. I had to run around 90o to keep it quiet.

Also like King said, 91 already has some alcohol on it. Try to blend in E and you're out of the ecm tables. It really needs the sensor to optimize it. And I'd be willing to bet running E would void the warranty (since it is over 15%) a lot easier than toluene/xylene.

It really depends on the area you are in the USA at, our 91 doesnt have Ethanol in it. Only our 87 comes in 87 pure and 87 E10. It would be hard for the dealer to prove Ethanol caused any issues, that isnt a simple or easy test to run and since any grade fuel can contain E10 the automobile manufactures have to accept that as well.

For us in Oklahoma, Xylene and Toulene are pretty hard to find and purchase due to our meth laws.

[95 imp]

Originally Posted by TJay74

It really depends on the area you are in the USA at, our 91 doesnt have Ethanol in it. Only our 87 comes in 87 pure and 87 E10. It would be hard for the dealer to prove Ethanol caused any issues, that isnt a simple or easy test to run and since any grade fuel can contain E10 the automobile manufactures have to accept that as well.

For us in Oklahoma, Xylene and Toulene are pretty hard to find and purchase due to our meth laws.

Xylene is a common paint thinner available at home depot, or any paint/hardware store. Toluene, I'm not so sure. I have never looked for it, but should be at paint/hardware stores too. It is also a paint thinner.

As far as a dealer testing for E... I doubt that would happen. But that isn't the point. The ecm has to know how much dinosaur juice to feed the engine. If you're running E16+, the ecm doesn't have the capability of doing it stock. That's why everyone puts the sensor in and reprograms.

[Aragorn]

We’re in the desert. Probably doesn’t help engine performance.

[95 imp]

Ya, you're probably right....

[TJay74]

Originally Posted by 95 imp

Xylene is a common paint thinner available at home depot, or any paint/hardware store. Toluene, I'm not so sure. I have never looked for it, but should be at paint/hardware stores too. It is also a paint thinner.

As far as a dealer testing for E... I doubt that would happen. But that isn't the point. The ecm has to know how much dinosaur juice to feed the engine. If you're running E16+, the ecm doesn't have the capability of doing it stock. That's why everyone puts the sensor in and reprograms.

Actually the ECM does, it uses the virtual E85 tables and does it based off of fuel trims. E10 is already calculated into the OEM programming.

[s346k]

the midwest must be good. i can get 87, 89, 91, 93, 94, 101, e85, cam2, diesel, off-road diesel, 0 ethanol gas, and kerosene from the pump. i only use the 87 and e85 options...well 93 for my mower but i’m not a yard guy so that’s not very often.

[TJay74]

Originally Posted by s346k

the midwest must be good. i can get 87, 89, 91, 93, 94, 101, e85, cam2, diesel, off-road diesel, 0 ethanol gas, and kerosene from the pump. i only use the 87 and e85 options...well 93 for my mower but i’m not a yard guy so that’s not very often.

I hope in that SS 1LE you are running at least 91/93 or E85 (if you have the sensor and are tuned for it).

[JCunningham]

if you can get 91 i wouldnt bother mixing e85. you're just not going to be making the same power as if you had 93 in it. its not worth the hassle.

[95 imp]

Originally Posted by Scargoes

I never used Xylene, I had always used Toluene.

Xylene has a higher octane rating. 114 for T and 117 for X.