92 Octane w/10% Ethanol vs 89 Ethanol Free?
TReK
Joined: Nov 2011
Posts: 2,748
Likes: 506
From: Seattle, Wa
In the Seattle area all grades and brands have 10% ethanol. Non E is generally unavailable. All you can do is buy the best fuel possible with the most detergents. Chevron Premium around here.
Either way though I'd recommend the regular use of either Techron or Seafoam in the gasoline.
Or a full on injection cleanse.
If that doesn't help with your sluggishness then you'll know you've got another issue.
Either way though I'd recommend the regular use of either Techron or Seafoam in the gasoline.
Or a full on injection cleanse.
If that doesn't help with your sluggishness then you'll know you've got another issue.
Last edited by Dave03S; Feb 18, 2013 at 12:30 PM.
Rock Crawling
Joined: Nov 2012
Posts: 290
Likes: 5
From: Odenville Alabama
Running lower octane gas will cause the computer to compensate by retarding the timing of our engine. It was designed to run on premium for a reason, optimum efficiency. By running 87 octane you are choosing to run inefficiently with retarded timing.
You'll need to run at least one full tank of premium through it to get the computer to put the timing back to normal.
I've tried it a time or two and notice that running with the timing retarded does make the engine louder, rougher, slower and possibly hotter.
You'll need to run at least one full tank of premium through it to get the computer to put the timing back to normal.
I've tried it a time or two and notice that running with the timing retarded does make the engine louder, rougher, slower and possibly hotter.
Argh!!
Last edited by Shade Tree; Feb 18, 2013 at 07:12 PM.
You guys are overthinking it.
Do your own research, figure your MPG using different fuels, I get the same MPG no matter what I use, octane wise, for normal driving.
I do get reduced performance while towing a trailer on lower octane fuel.
All of our fuels are E-10 (10% ethanol)
I use premium 98% of the time but if mid-grade non E-10 was available I'd use that instead.
Do your own research, figure your MPG using different fuels, I get the same MPG no matter what I use, octane wise, for normal driving.
I do get reduced performance while towing a trailer on lower octane fuel.
All of our fuels are E-10 (10% ethanol)
I use premium 98% of the time but if mid-grade non E-10 was available I'd use that instead.
You guys are overthinking it.
Do your own research, figure your MPG using different fuels, I get the same MPG no matter what I use, octane wise, for normal driving.
I do get reduced performance while towing a trailer on lower octane fuel.
All of our fuels are E-10 (10% ethanol)
I use premium 98% of the time but if mid-grade non E-10 was available I'd use that instead.
Do your own research, figure your MPG using different fuels, I get the same MPG no matter what I use, octane wise, for normal driving.
I do get reduced performance while towing a trailer on lower octane fuel.
All of our fuels are E-10 (10% ethanol)
I use premium 98% of the time but if mid-grade non E-10 was available I'd use that instead.
And thats what I meant, locally all of our fuels are E-10.
I guess I should have been more specific.
I found one place 30 miles away from me that has ethanol free premium, but I'm not driving 60 miles for that.
I guess I should have been more specific.
I found one place 30 miles away from me that has ethanol free premium, but I'm not driving 60 miles for that.
Don't hit me for saying it, but I'm really happy Jeep is offering a diesel in their grand cherokee, maybe LR will EVER take notice of all the cool sh*t happening around them. Oh wait... they can't see it... because the windows in the Evoque are too small.
I have said for years that LR needs to sell a basic bare bones TDI LR4 to the rural USPS carriers, RHD and all just like Subaru used to do.
Jeep does it still, there are several on my route that have RHD Wranglers.
4x4 for the snow, plenty of room for mail.
Jeep does it still, there are several on my route that have RHD Wranglers.
4x4 for the snow, plenty of room for mail.
Thread Starter
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Overlanding
Joined: Aug 2011
Posts: 16
Likes: 0
From: Kona, HI
Quick Update
Using 92Octane with up to 10% ethanol I was getting 13.2mpg
My first tank of 89 Octane ethanol free I added fuel injector cleaner and when I filled up next I calculated 13.8mpg
With my second tank of 89 Octane ethanol free my check engine light cam on after 2 days of driving. I added a bottle of octane boost and the light went off late that same day. I had checked to make sure the fuel cap was tight and it was). The second tank of 89 E-Free gas got me 14.9mpg and after I put the octane boost in I notice a big improvement going up the steep hills here.
I just filled up with my third tank of 89 E-Free and I put in a bottle of octane boost while filling up.
Thanks
Using 92Octane with up to 10% ethanol I was getting 13.2mpg
My first tank of 89 Octane ethanol free I added fuel injector cleaner and when I filled up next I calculated 13.8mpg
With my second tank of 89 Octane ethanol free my check engine light cam on after 2 days of driving. I added a bottle of octane boost and the light went off late that same day. I had checked to make sure the fuel cap was tight and it was). The second tank of 89 E-Free gas got me 14.9mpg and after I put the octane boost in I notice a big improvement going up the steep hills here.
I just filled up with my third tank of 89 E-Free and I put in a bottle of octane boost while filling up.
Thanks