‘94 Rangie LWB 93 octane with 10% ethanol vs 90 without

Tugela

Well-known member
May 21, 2007
4,624
415
Seattle
I found this exact fuel combo when driving through GA in my LR3. That tank returned 20mpg driving 55mph on secondary highways with a heavily laden vehicle. 90 octane is still higher than midgrade and will be fine in the D1. If the price is comparable, use it. Even if not, use it.
 
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Blueboy

Well-known member
Apr 20, 2004
3,035
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Back in the USA; Rockwood, PA
I found this exact fuel combo when driving through GA in my LR3. That tank returned 20mpg driving 55mph on secondary highways with a heavily laden vehicle. 90 octane is still higher than midgrade and will be fine in the D1. If the price is comparable, use it. Even if not, use it.
Thx! That was my thought as well yet wasn’t sure of the 90 octane.
 

discostew

Well-known member
Sep 14, 2010
7,276
837
Northern Illinois
Found a station that offers ethanol free gas yet rated only 90 octane.

What is the better way to go?

Also ‘96 D1.

Thx
Ethanol free gas has some advantages. If your truck is going to sit thru the winter I would put ethanol free fuel in it for the last couple tanks of the season. Ethanol turns to varnish really fast, I learned that the hard way keeping ATV’s and snowmobiles.
Also keep in mind that alchohol in itself will act like octane. It does that because it has less BTU’s than petrol does. Octane is an additive to slow the burn. Alchohol in fuel makes the car burn less gasoline only because your now using a food source for fuel. Yes your going to use less gasoline but your going to burn more gallons of the crap.
To prove that I’ll offer up this known fact and you guys do the figuring. Sometimes a car will come in with a check engine light on and lean codes stored. After running down the usual suspects and coming up with nothing you check the fuel alcohol content and it’s like 40% alchohol. So the car can’t inject enough of that fuel to satisfy the fuel management system. Cause it’s shit.
 

discostew

Well-known member
Sep 14, 2010
7,276
837
Northern Illinois
I normally run ethanol free fuel in my Chevy Cruze. It’s an Eco model and gets about 42 mpg on ethanol free fuel and about 38 on 10% ethanol. But right now with gas prices the way they are I settle for the 10% stuff. Plus my car is going to die soon (I feel it) so I kinda stopped caring.
Also keep in mind that alchohol levels over 10% will cause o rings to swell and fuel pump seals as well.
 

Blueboy

Well-known member
Apr 20, 2004
3,035
377
Back in the USA; Rockwood, PA
I normally run ethanol free fuel in my Chevy Cruze. It’s an Eco model and gets about 42 mpg on ethanol free fuel and about 38 on 10% ethanol. But right now with gas prices the way they are I settle for the 10% stuff. Plus my car is going to die soon (I feel it) so I kinda stopped caring.
Also keep in mind that alchohol levels over 10% will cause o rings to swell and fuel pump seals as well.
The Saab and Rangie do not get used that frequently so both are good candidates for E0 gas. The Audi goes through a tank a week even in the Winter as ski car so E10 is fine. I’m thinking the D1 might run better with E0. At least I’m going to give it a shot now that it is readily available.