[driven2exceSS]

Originally Posted by 95 imp

It depends on the alcohol content whether you gain or lose w/100. Higher alcohol content=higher octane.

Originally Posted by Joshinator99

No, E has a higher octane rating than 100 pump gas. And cleaner, and cheaper to boot.

Originally Posted by KingLT1

Octane chart for E85 and other percentages.

Thanks guys Also found this thread:
https://www.camaro6.com/forums/showthread.php?t=540383

[Joshinator99]

Originally Posted by KingLT1

Octane chart for E85 and other percentages.

Great chart! Thanks for sharing.

[KingLT1]

No problem.

[95 imp]

Originally Posted by driven2exceSS

So say a round number of 70% E85?

You can't get an exact answer, only a guess.

Here is the tech behind E.
https://www.sunocoracefuels.com/tech...hol-and-octane

Originally Posted by driven2exceSS

Is there any benefit to leaded verses the un-leaded 100 octane race fuel to risk the damage to sensors?

TE Lead is/was a cheaper way to raise octane instead of using premium distillates.

It was used as a valve lubricant and a octane booster for motors prior to 1970. Modern motors have hardened valve seats, different exhaust valve and valve guide material (well, since the 71 MY) because of the leaded pump gas phaseout in 1975 due to cats being installed in production cars.

Short answer, no benefit really unless it's cheaper. As I said, the lead will eventually coat the O2 sensor and cause it to fail. Parts/labor to change them more often might not outweigh the savings of using TEL vs no lead fuel.

On a DD, they probably wouldn't last too long.

Obviously, a track car would have problems over time. Drag cars can go a while because of the short runs.

[driven2exceSS]

Originally Posted by 95 imp

You can't get an exact answer, only a guess.

Here is the tech behind E.
https://www.sunocoracefuels.com/tech...hol-and-octane



TE Lead is/was a cheaper way to raise octane instead of using premium distillates.

It was used as a valve lubricant and a octane booster for motors prior to 1970. Modern motors have hardened valve seats, different exhaust valve and valve guide material (well, since the 71 MY) because of the leaded pump gas phaseout in 1975 due to cats being installed in production cars.

Short answer, no benefit really unless it's cheaper. As I said, the lead will eventually coat the O2 sensor and cause it to fail. Parts/labor to change them more often might not outweigh the savings of using TEL vs no lead fuel.

On a DD, they probably wouldn't last too long.

Obviously, a track car would have problems over time. Drag cars can go a while because of the short runs.

Fantastic answer that I'm able to understand!! Thank You Sir.

[L99BEN]

Originally Posted by arpad_m

What issues specifically? I read through the forum thread you linked and checked the google search results, nobody complains about anything except the orange discoloration of the soot that would be present anyway, except it'd be gray or black. Conversely, several people complained that Sunoco race fuel didn't eliminate knock on their setups, while Boostane did.

Sorry I guess I didnt read through all of that thread I was trying to give examples of some of the potential associated issues. Its possible in a warranty situation, the dealer could see evidence of use of these products where they wouldn't with pure unleaded race fuel.

[AKAFAZT]

The zl1 manual says you can safely run up to E15 so I've been mixing 1.25 gals of calif. E85 (ca. E85 = true 83 ethanal) in each fill up and the average comes out @ 92.2 octane and 16% ethanal. Ca. only has 91 octane. I have two e85 stations very close. I used Brew City Boost site to calculate. Every little bit helps. Plus e85 is over a dollar per gal. cheaper. Chevron e85 then fill with there 91. It's all good.

[Mark R]

I bought a 32 oz can of Torco race fuel concentrate and put it in a full tank of 91. By my seat of the pants dyno, it woke the car up quite a bit. It was $23 with tax. I wont do this often, but I am pleasantly surprised and happy with the results.

[Markoz28]

Originally Posted by Mark R

I bought a 32 oz can of Torco race fuel concentrate and put it in a full tank of 91. By my seat of the pants dyno, it woke the car up quite a bit. It was $23 with tax. I wont do this often, but I am pleasantly surprised and happy with the results.

I’m more familiar with Boostane than Torco but I would imagine 1 whole can is over kill.

With Boostane Pro starting with 91 octane I would use 8oz per full tank. This would put you right above 96 octane. This should help with power and limit knock retard. 1 whole can will last you 4 fill ups. Sound like a good plan to me and not too expensive.

[Mark R]

Originally Posted by Markoz28

I’m more familiar with Boostane than Torco but I would imagine 1 whole can is over kill.

With Boostane Pro starting with 91 octane I would use 8oz per full tank. This would put you right above 96 octane. This should help with power and limit knock retard. 1 whole can will last you 4 fill ups. Sound like a good plan to me and not too expensive.

I mixed it per the instructions.

[Dathomas94]

The Boostane bottle says octane boost not race full concentrate on Amazon is it just dumbed down marketing or am I looking at the wrong product ?

[Dathomas94]

The Boostane bottle says octane boost not race full concentrate on Amazon is it just dumbed down marketing or am I looking at the wrong product ?

[JSH]

Originally Posted by Mark R

I have read some posts here that the stock 2018 ZL-1 will respond well to high octane fuel, potentially delivering an extra 20-25 horsepower. We only have 91 here in New Mexico, so I was wondering if some octane booster would do the same thing as 100 octane gas.

Does anyone have some input about this subject?

Thanks.

Mark R.
Albuquerque NM

You won't get the full benefit of higher octane unless you tune for it and add advance.

[HemiDave]

Originally Posted by JSH

I won't get the full benefit of higher octane unless you tune for it and add advance.

This.

https://youtu.be/RbibjvIjmvo