91 or 89?

RJ68 said:
So I found out that Costco is about $.40 cheaper for Premium than the gas station I’ve been putting gas at, I’ve been putting 89 octane. Since Costco is closer and a little bit more cheap, is there any harm putting in 91 in a 2013 Tacoma?
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I suppose its one way to piss away money you don't need by running a higher grade fuel not called for. I run only 87 octane in my 3.5 v6, and it always runs great.
 
Cape taco said:
Hard tellin' not knowin';)
They had no ethanol in moab. That was cool. Never seen it here in New England except in 1 gallon cans for 18 bucks!
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I've bought non ethanol gas at the pumps in vermont. In connecticut, and ma. i've only seen it advertised as being sold in various gal. cans, and at some station pumps as race gas...neither were cheap.
You can also purchase a higher octane non ethanol fuels for power equipment as mentioned above sold in quart cans as tru fuel, and other brands straight, or premix. at home cheapo or lowes. Not cheap either at $6 a qt. I've used it, and its remarkable how well, and consistent my stihl chainsaws work using it vs premix pump gas.
 
I've got a vintage stihl wood boss chainsaw i've restored. I run the premix red cans of tru-fuel in it also. I've tried 91 octane pump gas with a 50/50 mix, and it just won't run nearly as well. Its way harder to start also.
 
Usually run 91 no ethanol. It's up to $4/gallon now so have switched over to 89 with 5% ethanol which is $3.35. Mileage has dropped off about .5mpg and seems to run just as well. Trying to stay away from the 10% ethanol if I can.
 
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