100ll av gas vs 10 percent ethanol

[Scooter L.]

In Oregon, all gas now has a minimum of 10 percent ethanol. Would 100ll av gas be a good substitute? I've read almost all the previous postings on this subject, and just want to know if the av gas is a better choice (and OK) than the 10% 93 octane pump gas.
Thanks - Scooter

[Michael W.]

Re: 100ll av gas vs 10 percent ethanol

I've been running 10% ehanol for many years and have never had a problem. No need for avgas, nor is it legal.

[Joel F.]

Re: 100ll av gas vs 10 percent ethanol

I've been running 10% ehanol for many years and have never had a problem. No need for avgas, nor is it legal.

I am with Michael, though I have found it helpful to richen my mixture a bit when using an ethanol blended fuel.

[Joe L.]

Re: 100ll av gas vs 10 percent ethanol

In Oregon, all gas now has a minimum of 10 percent ethanol. Would 100ll av gas be a good substitute? I've read almost all the previous postings on this subject, and just want to know if the av gas is a better choice (and OK) than the 10% 93 octane pump gas.
Thanks - Scooter

Scooter-----


I agree with Mike; I don't think that 10% ethanol is going to cause any problems, whatsoever, for you. It MIGHT cause slightly faster deterioration of the rubber components of OLDER fuel pumps and OLDER rubber fuel lines. However, these components should ALWAYS be replaced on a regular basis, anyway, and not allowed to get to the point of failure. Whether the gasoline contains ethanol, MTBE (the oxygenate precursor to ethanol which many once blamed for fuel system deterioration problems) or neither, the rubber components of fuel systems WILL deteriorate and fail without periodic replacement.

[Stuart F.]

Re: 100ll av gas vs 10 percent ethanol

Yes, gas with the 10% ethanol is great if you like smelling it in your attached garage for a couple days after you put your car away hot. We with the old vented fuel systems get to enjoy it that much longer. What with the measures I have had to take to limit fuel percolation, I now have to chase lean surge and hesitation.

Stu Fox

[Bill I.]

Re: 100ll av gas vs 10 percent ethanol

I checked with the owner of the Chevron station, and he checked with his gas supplier, according to him, 93 octane in his tanks contain NO ethenol. Don't know if it's true but that what's I was told. Bill

[Rich G.]

Re: 100ll av gas vs 10 percent ethanol

I have easy access to 100LL and have found over the years (we have had 10% ethanol here for years) that I can't tell the difference in my 66 327/350 and my 68 427/435 runs better on pump 93. The 100LL seems to foul plugs with the lead. Even though it's called "low lead" I think I read somewhere it has a lot more lead than the old 80/87 leaded avgas. It sure does collect in the massive electrode plugs in the small continental aircraft engines.

Also, car gas is WAY cheaper

Rich

[David K.]

Re: 100ll av gas vs 10 percent ethanol

I can really tell a difference running AV gas in my '62. No problems with vapor locking on a hot summer day, like I have had with ethanol in the tank. For storage, I have been told from the aviation guys, it is the only way to go. I don't think you need a steady diet of it. But when it is hot outside, I will be running some of it and when I store I will fill the tank with it.

[Don H.]

Re: 100ll av gas vs 10 percent ethanol

I have run 100LL in my '60 FI for years (except when on the road) and in my opinion it is worth the extra $. I live very near the airport so it is easy to get. The fuel bowl stays clean and the car is "drivable" after a restart in 90+ degree days (IE: convention in St. Louis this year). I know this is mainly a Fuel Injection problem that has been discussed here recently. Don H.

[Rich G.]

Re: 100ll av gas vs 10 percent ethanol

Good points about the vapor pressure for the fuel cars and the long term storage. I didn't think of that since I have carburators and I tend to drive all year round, albeit less in the winter, like today when it's 20 %@*& degrees.

Rich

[Joel F.]

Re: 100ll av gas vs 10 percent ethanol

I checked with the owner of the Chevron station, and he checked with his gas supplier, according to him, 93 octane in his tanks contain NO ethenol. Don't know if it's true but that what's I was told. Bill

Bill,

Requirements for ethanol blending vary by county and state. It is possible that your part of Florida does not (yet!) require ethanol blending.

Alternately it is possible that the person you talked to does not know what he is talking about. Ethanol is typically blended with the gasoline at the supplying terminal, so when it gets delivered to the station the ethanol is already blended with what goes into the storage tank.

Joel

[Stuart F.]

Re: 100ll av gas vs 10 percent ethanol

About a few months or so back, there was a news story regarding the fact that Florida was now 100% having Ethanol - by State regulation. In fact, I believe it was touted by Governor Charlie hisself. There had been Counties or suppliers w/o up until then, but as most of our fuel comes in by boat (?) we have just a few sources which are easier to control. Believe this came about around the same time that other States here in the SE were having shortages and we were not. At the time they were explaining why we were not affected by the shortages, they mentioned "oh ya, by the way, it all has 10% Ethanol". I recall this as it upset me at the time to hear that.

If the Chevron dealer says his does not, either he is misinformed or he don't sell much gas.

Stu fox

[John D.]

Re: 100ll av gas vs 10 percent ethanol

I have run 100LL in my '60 FI for years (except when on the road) and in my opinion it is worth the extra $. I live very near the airport so it is easy to get. The fuel bowl stays clean and the car is "drivable" after a restart in 90+ degree days (IE: convention in St. Louis this year). I know this is mainly a Fuel Injection problem that has been discussed here recently. Don H.

Donald, I agree with you 100%. When we can no longer buy 100LL it will be a sad day. Thanks, John D.

[John D.]

Re: 100ll av gas vs 10 percent ethanol

Old JD here wrote a nice article concerning ethanol and your 57 to 65 fuel injections.
Vinnie will have it in an upcoming issue of "THe Restorer". He did a wonderful job of setting it up.
In my town now I think all the stations have the crap gas. Yes Stu it does smell. I use 100LL for testing the FI's, for cleaning spots off the carpet, and for my vendor trailer generator when it's in storage all winter.Oops. Forgot I use it exclusively in my LWC. I love the stuff and have considered using it in a martini.
The built in leak detector(blue) is a big help also. Our 100LL is blue. When guys say bad stuff about it I just nod my head and keep quiet. Then I completely ignore them and keep on truckin. Been using 100LL since an old time NCRS member recommended it in 1990. JD

[Stuart F.]

Re: 100ll av gas vs 10 percent ethanol

John;

I question the statement that it is Illegal - to use it in an automobile. I'd like a clarification on that. Perhaps in some states, and also any statute that adresses that probably is definitive as to what they mean by automobiles, i.e.: all, or perhaps certain years, or if the mfg. states/recommends that that vehicle must use unleaded, etc. I know many people, such as yourself, use 100LL and can't all be facing penalties for doing so. Is it all sold "out of the hanger" with a wink? how about the sellers?

I know if it were easier to get (proximity to an airport), I'd sure love to try it. I've been falling all over myself and losing sleep at night trying to overcome the drivability problems and garage stink with the crap gas.

Stu Fox