Ethanol blended gasoline, hurting engine performance, i'm afraid... Options

[saleeka]

This past weekend, I encountered a scenario that got me thinking about ethanol in gasoline again- is it hurting vehicle performance? It all started with a trip over to Wisconsin. On the way home, I had to fill the car up, so I pulled into a station just before I crossed back into MN. I've been filling my car up with premium fuel for quite some time, as I have always felt that it's made a difference in the performance of my car, even more so now that my car has 185,000 miles and has lost a lot of its original power. I noticed that the station I was at had premium fuel that was rated at 91 octane. Typically at home, the station I frequent sells 92, so immediately I thought to myself that I may notice a difference and experience decreased performance. I certainly did not expect it to make the difference that it did. There was a very noticeable improvement in the power that car was putting out! Now that I’ve used up half the tank and have seen that this wasn't a fluke, I started to ask myself why this particular tank of gas was making that difference, and it occurred to me just now.

Here in MN, it's been law for years that all gasoline sold in the state be at least 10% ethanol. After some research, I found that in WI, gasoline that is 91 octane or higher does not have this similar requirement. I then decided to read up on ethanol gasoline blends. I found that for ethanol blends to be used efficiently, the engine burning the blend should have higher fuel injection pressure or larger injectors than that of an engine that runs on gasoline alone, thus explaining why the ethanol-free gas in my car is "creating" more power... Annoying! This is also why only EFI engines can tolerate ethanol blended fuel without re-tuning of various parts of an engine's fuel supply system (cars without electronic oxygen sensors cannot compensate for the difference in energy the fuel contains. I'd also argue that some EFI systems, like our older ones, don't do a good job of adjusting, either. Most vehicles in the USA can only tolerate up to a 90/10 % split without big problems). More discouraging facts: ethanol blends have larger amounts of water in them compared to gasoline, and they also contribute to accelerated engine wear thanks to the "drying" effect alcohol has...

All this info makes me suspect that my car isn't as tired and worn out as I once thought. I'm now thinking it's the gas blends we are required to use in this state. For those of you who have easy access to ethanol-free gasoline, I'd strongly recommend selecting that choice over the blend.

[playr158]

Wow i cant believe so many people are talking about E85 in cars that are not made for it. If your car is made for it... great use it! If not DON"T! Its that simple, there r various reasons why u can hurt your car with E85 (see me post here http://www.6gc.net/forums/index.php?showtopic=59989). But your are not getting better performance or more HP PERIOD. Unless your engine has something like 12.7:1 compression you will see no extra power. And when people say "well my car seems to run smoother" or course it does one inherently bad property of E85 is that is act like a solvent and eats up carbon then your seals and aluminum. Best thing is use one tank of E85 it will clean your car and restore (not add) some power, then go right back to whatever your OEM says to use. Also with the much higher octane u would need to adjust timing or even get plugs with a different heat range. And E85 is not "harder" to burn once ignited is burns more rapidly, its just harder to ignite in the first place. If u guys r so concerned about MPG just do the basic stuff 90% of people over look. Clean you air filter often, change your oil, keep your tires inflated properly and don't carry around that set of golf clubs and the bowling ball all week when u only bowl and golf on the weekend!

hallelujah!

but i like my golf clubs do i have to take them out?! can't i just like remove like a piston or something?!

[SlickRick]

Wow i cant believe so many people are talking about E85 in cars that are not made for it. If your car is made for it... great use it! If not DON"T! Its that simple, there r various reasons why u can hurt your car with E85 (see me post here http://www.6gc.net/forums/index.php?showtopic=59989). But your are not getting better performance or more HP PERIOD. Unless your engine has something like 12.7:1 compression you will see no extra power. And when people say "well my car seems to run smoother" or course it does one inherently bad property of E85 is that is act like a solvent and eats up carbon then your seals and aluminum. Best thing is use one tank of E85 it will clean your car and restore (not add) some power, then go right back to whatever your OEM says to use. Also with the much higher octane u would need to adjust timing or even get plugs with a different heat range. And E85 is not "harder" to burn once ignited is burns more rapidly, its just harder to ignite in the first place. If u guys r so concerned about MPG just do the basic stuff 90% of people over look. Clean you air filter often, change your oil, keep your tires inflated properly and don't carry around that set of golf clubs and the bowling ball all week when u only bowl and golf on the weekend!

hallelujah!

but i like my golf clubs do i have to take them out?! can't i just like remove like a piston or something?!

just keep the putter in the car for practice, the short game is where everyone adds a bunch of strokes anyway.