Question for those have flex fuel kit installed

[CSG Mike]

Originally Posted by Breadman

citation needed, there is a federal requirement for what needs to go in

How about some independent data?

https://www.consumerreports.org/car-...h-extra-price/

[tomm.brz]

ethanol should keep valves even cleaner than that, why you suggest that gasoline should clean better than ethanol?

[Breadman]

Originally Posted by CSG Mike

How about some independent data?

https://www.consumerreports.org/car-...h-extra-price/

the original claim is that e85 doesnt have detergents in it, that link doesnt mention e85 and also claims that there is a federal requiremed minimum for detergents. so i dont really get the point that you are making.

[CSG Mike]

Originally Posted by Breadman

the original claim is that e85 doesnt have detergents in it, that link doesnt mention e85 and also claims that there is a federal requiremed minimum for detergents. so i dont really get the point that you are making.

For someone so argumentative, you seem to be challenged with a quick google search. Let me give you what you want on a golden platter.

https://www.afdc.energy.gov/fuels/et...e85_specs.html

You do know how to read a MSDS?

https://www.afdc.energy.gov/uploads/...n/SSA_MSDS.pdf

[FRSBRZGT86FAN]

Originally Posted by CSG Mike

The fuel switch is to help keep your valves clean. Ethanol does not have the detergents that pump gas has.

Wouldn't our valves already be relatively clean running either fuel anyway?, we have PI as well that does a pretty good job of "self-cleaning" the valves. E85 does create intake valve deposits, but I feel like PI usage in the tuning would counteract that would it not?

Originally Posted by Breadman

citation needed, there is a federal requirement for what needs to go in

Originally Posted by Yoshoobaroo

It depends where you get your gas. Ethanol itself works better as a solvent than gasoline, but top tier gasoline brands (Shell, Mobil, etc.) put extra detergents in the gasoline so it cleans better.

Looking at an MSDS from your E85 supplier will show there isn't really the same requirement for E85 or racing fuels.

[FRSBRZGT86FAN]

Originally Posted by tomm.brz

ethanol should keep valves even cleaner than that, why you suggest that gasoline should clean better than ethanol?

Originally Posted by tomm.brz

? everybody always say that ethanol as a solvent cleans better the engine than petrol, you are now saying the opposite...

Their is a difference, intake valve deposits actually stay the same, on our cars though I'm pretty sure the use of both DI/PI reduces any issues with intake valve deposits. Combustion chamber deposits, however, drop considerably as the fuel burns more "fully" and cleaner

[CSG Mike]

Originally Posted by FRSBRZGT86FAN

Wouldn't our valves already be relatively clean running either fuel anyway?, we have PI as well that does a pretty good job of "self-cleaning" the valves. E85 does create intake valve deposits, but I feel like PI usage in the tuning would counteract that would it not?







Looking at an MSDS from your E85 supplier will show there isn't really the same requirement for E85 or racing fuels.

PI would have some fuel washing over the valves, but the fuel alone is not sufficient to prevent all buildup. This is the big marketing push behind top tier fuels, but the actual data behind the marketing is real.

[tomm.brz]

i have no doubts top tier petrol would clean better than shitty fuel... but ethanol would clean better both valves and chamber than top tier petrol, shouldn t it?

[CSG Mike]

Originally Posted by tomm.brz

i have no doubts top tier petrol would clean better than shitty fuel... but ethanol would clean better both valves and chamber than top tier petrol, shouldn t it?

It is corrosive, but it is not a detergent.

Try cleaning an oily fry pan with ethanol, and let me know how well that works for you. (Spoiler: it doesn't work well at all) This would simulate the portion where your intake has a breather valve connected to it for oil vapors.

Try cleaning a fry pan with burned stuff stuck on it with ethanol. Heck, even let it soak overnight in ethanol, and see how well the ethanol clean it. This is the carbon build up on your valves.