92 Octane w/10% Ethanol vs 89 Ethanol Free?
#1
#4
Thats what I'd do.
Do this guys, get a MPG app for your phone, for 5 tanks of fuel use the ethanol mix, then for another 5 tanks use the non ethanol mix and see what your MPG is and then use whichever gets you the best MPG.
I dont have a choice here, but I have found I get better MPG based on the brand of fuel, I've been buying my fuel at Costco for the last year, better MPG than Shell even.
I get the best MPG with Mobil but Costco is more convenient.
Do this guys, get a MPG app for your phone, for 5 tanks of fuel use the ethanol mix, then for another 5 tanks use the non ethanol mix and see what your MPG is and then use whichever gets you the best MPG.
I dont have a choice here, but I have found I get better MPG based on the brand of fuel, I've been buying my fuel at Costco for the last year, better MPG than Shell even.
I get the best MPG with Mobil but Costco is more convenient.
#6
Won't the lower octane fuel be countered by the ECU retarding the timing?
Or is that less noticeable on the 4.0l engine?
I once found 91 octane premium with no ethanol and my truck LOVED that fuel.
I normally use the 92 with 10% E because thats all you can get here... and I make sure to use a top shelf brand plus use injector cleaner before every oil change.
I previously had a bad experience using 92 octane premium ARCO brand gas, gummed up the injectors really good.
Or is that less noticeable on the 4.0l engine?
I once found 91 octane premium with no ethanol and my truck LOVED that fuel.
I normally use the 92 with 10% E because thats all you can get here... and I make sure to use a top shelf brand plus use injector cleaner before every oil change.
I previously had a bad experience using 92 octane premium ARCO brand gas, gummed up the injectors really good.
#7
I've been using the 92 Octane w/10% Ethanol from Costco for the last 1.5 years and I've been getting about 13.3mpg, although it has been feeling sluggish going up the steep hills here.
I filled up with 89 Octane E Free at Tesoro this weekend and used a bottle of Cheveron Injector Cleaner. I'll let you know how the MPG is in a week or so.
I filled up with 89 Octane E Free at Tesoro this weekend and used a bottle of Cheveron Injector Cleaner. I'll let you know how the MPG is in a week or so.
#8
#9
And it is a well known and established fact that ethanol reduces MPG in everything, especially cars that were built before the E-10 was readily used.
#10
Won't the lower octane fuel be countered by the ECU retarding the timing?
Or is that less noticeable on the 4.0l engine?
I once found 91 octane premium with no ethanol and my truck LOVED that fuel.
I normally use the 92 with 10% E because thats all you can get here... and I make sure to use a top shelf brand plus use injector cleaner before every oil change.
I previously had a bad experience using 92 octane premium ARCO brand gas, gummed up the injectors really good.
Or is that less noticeable on the 4.0l engine?
I once found 91 octane premium with no ethanol and my truck LOVED that fuel.
I normally use the 92 with 10% E because thats all you can get here... and I make sure to use a top shelf brand plus use injector cleaner before every oil change.
I previously had a bad experience using 92 octane premium ARCO brand gas, gummed up the injectors really good.
Using a slightly lower octane non-ethanol fuel should not retard the timing any more than the E-10 mix.
Thats why I said to track your MPG and see what happens.
But you have to track it over a longer period of time to compensate for your driving different because you know you are using a different fuel blend as well as to give the ECU time to re-map for the different fuel blend.
Just try it guys, your truck wont explode when doing this.
Track your MPG with the different fuels and then post your results.