trickydisco

The End.

TrackdayRSA.

Thanks for clarifying Jaak. I no longer need to search out Sunoco stations...

swbatte

+1 ethanol is a powerful solvent and will disolve particles in the gas station's tank or yours and clog your injectors. Shell Gold for me.

993c4_Toronto

Wow - I thought my question was super simple yet, as everything seems to be since I entered this crazy Porsche world, it was more complicated than one would first expect.

I want you to know that I just came back from a two hour drive with my 9 year old and on the way back we stopped off at Shell for some V-Power 91. The best part was, I finally knew for sure that this was the right fuel for my car.

Thanks guys - appreciate the info!

sebastian944

yeah i've been hearing conflicting opinions about this, and i'm no expert and i have an old 951. Apparently in the US you can't even buy gas that doesn't have at least 10% blend of the stuff. Race cars run 80% or more Ethanol too... or so i've been told.

Jaak Lepson

Chris, your welcome.

If you have any small engines such as outboards, skidoos, lawnmowers etc., it's best to use Shell 91 as well. They will run better and longer. If you use ethanol fuels, they have to be re jetted to run a bit richers. There have been a bunch of snow machines who's engines have burnt out after one season. I use it in my outboards and they run great. Used lower grades which has ethanol and they ran poorly.

Jaak Lepson

What does your butt dyno say ...?

Torontoworker

This depends on the race series. IndyCar of course run Ethanol and up to this last weekend we were told that it was 100% but the recent race in Edmonton where they had a car fire and you could see the flames - leads me to believe along with the commentary that they have added a small amount of gasoline so you can see the flames now. (A good thing!)

Running such a high percentage of Ethanol WILL kill your engine; however this series 'pickles' their engines every night by twisting a valve and running gasoline through the motor from a spare tank for a few minutes until the system is purged and the motor is then shut down. They reverse the process in the morning before going out on track. If you leave Ethanol in your motor it will over a very short time frame (days) start pitting Aluminum and any other alloys as well as attack plastic's and rubber.

Alcohol actually works better in turbo motors running high boost and high compression motors and has worse fuel economy for the avg motorist due to it's lower thermal output. The advantage is lower heat which racers like if they are boosting the engine out of sight.

I've used Sunoco 94 when I had too as I was almost running out of gas and no Shell station in sight, but I only did a 1/4 tank of it to get to a Shell and fill up there. I would never fill up a car and store it for six months with the stuff in the tank!

theiceman

Actually there are gas stations in the US that do not run ethanol. I actually saw a few last week and they advertise large.

993c4_Toronto

I don't understand the question, but since I have a 9 year old son, I am guessing there is a joke in here somewhere??

theiceman

he is basically asking does it " feel" faster

harrisonrick

aluminum + ethanol = trouble

I stay away from that crap. Only an engine designed for it can run well with it.

993c4_Toronto

Ah, thanks. I have only filled up a handful of times since I got the car and once was the v-Power - I just wasn't sure if I was doing the right thing.

I am getting more comfortable and confident with the car each day so that's really what makes the car feel faster to me at this point. Maybe once I get a few more months and hopefully, a DE day under my belt, I'll be able to notice performance changes better.

JDSStudios

Yes, and:
The worse is Ethanol absorbs water right from the air (it is hygroscopic), and also,
it separates from gasoline within 90 days- definitely no good for storage.

There are several documents in this site with more details.

Jaak Lepson

Your Butt Dyno .. does your Butt feel it is faster and more responsive when in the drivers seat ... similar to a dyno where one tests the car on ....


gonna hafta call you a rube for a while ....