Fuel Mixture Gas Grade

[narutokun0420]

Which gas grade do you use in your MB?

 

[DeathProof]

i only use premium 91% full grade the less the ethanol the better

 

[Fabian]

"No" ethanol is better!

 

[DeathProof]

ethanol bad!

 

[DeathProof]

http://www.fuel-testers.com/ethanol_engine_precautions.html

 

[Sidewinder Jerry]

I only use 93 premium 100% gas in all my small engines. To my good fortune there's a station where I live that sells it.

 

[DeathProof]

exactly! jerry knows the higher the grade of gas the better so screw ethanol!

 

[Skyliner70cc]

Standard grade 85 octane for standard compression engine

Grade 87 octane for slant head higher compression engine.

Grade 89 octane for high compression after market heads.

I'm at high altitude so add 2 points to each octane grade of fuel for your lower altitude area.

I've never had an issue with ethanol in fuel. I occasionally see phase separation but that is with my choice of lubricant which I add to the tank. A quick shake of the fuel tank fixes that easily.

 

[tooljunkie]

there is some kind of additive to neutralize the effects of ethanol if i recall.
here's the $1.22 question-how do you know you are getting what you pay for?
i have a story.
as part of my job,i am a mixing technician for the helitorch backburn team.
prepping the burn mixture using gas and a gelling agent,regular pump gas
requires 5-10 % water in order to dilute the ethanol.
then fuel gels.
our fuel supplier provides us with premium(low or non ethanol)to fuel our small engines.
during training,we attempted to mix a barrel of gelled fuel for the helitorch.
it wouldnt gel til i added 2 gallons of water,telling me it wasnt premium.
the instructor confirmed this,only regular pump gas needs water added ,not premium.
now we need to have our fuel tested.

 

[motorpsycho]

i run the cheapest gas I can get...always 87 octane.
in my opinion, in a h.t. engine, anything over 87 octane is a waste of money, unless it has a milled head or a an aftermarket high compression head.
This is just my opinion because i can't see paying the extra money for premium fuel, when you gain nothing from it in a low compression engine.
The extra cost of the fuel just goes out the exhaust.