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  #1  
Old 05-08-2014, 12:21 PM
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Question Should I use REC 90 gas in my V8?

Should I use REC 90 gas in my V8?

I have a friend who swears by it....because it has no ethanol and he uses it exclusively in his big V8 extended Yukon.

It is 90 octane with zero ethanol versus the midegrade I use (and recommended by Jeep) which is 89 octane with up to 10% ethanol. Better performance and mileage with the REC 90???

Any thoughts on this??? See label photos.
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  #2  
Old 05-08-2014, 12:43 PM
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Re: Should I use REC 90 gas in my V8?

Not a boater and have not seen it around here away from marinas but I'm gonna go out on a limb and say it's better in all aspects for the hemi, except the wallet?

how much? more accurately, due to regional diffs in gas prices, how much MORE than 87 and/or 89 is it?
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Old 05-08-2014, 12:53 PM
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Re: Should I use REC 90 gas in my V8?

Not familiar with that type of gas. We have ethanol free premium available here which I use in my other vehicles. Usually see a 1-2 mpg improvement with the pure gas vs. ethanol laced gas.
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Old 05-08-2014, 12:56 PM
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Re: Should I use REC 90 gas in my V8?

Quote:
Originally Posted by Dan JGC View Post
Should I use REC 90 gas in my V8?

I have a friend who swears by it....because it has no ethanol and he uses it exclusively in his big V8 extended Yukon.

It is 90 octane with zero ethanol versus the midegrade I use (and recommended by Jeep) which is 89 octane with up to 10% ethanol. Better performance and mileage with the REC 90???

Any thoughts on this??? See label photos.
I don't have a complete answer for you but I can tell you the following:
- Ethanol in gasoline leads to shorter shelf life as the ethanol in the gas absorbs moisture in the air and it causes fouling of the fuel. When this happens, the water and ethanol make a "gummy" residue that can foul up the internals. Age of fuel, how often you fill your tank (the Jeeps have 25 gallon tanks so the fuel may not stay as fresh at the last drop). Modern carmakers have made cars "able" to deal with this junk but I feel, if you can get the better stuff that won't gum, it is going to help everything stay cleaner and run longer. I have a friend who had the enthanol gunk up his carborator in his old car and the technician said it was 100% from enthanol in the gas. I personally had a lawn mower (Briggs and Stratton motor) gunk up and stop running after 3 months of using 91 octane gas with 10% ethanol. When I took that to the shop, the tech said the same thing. 100% due to ethanol reducing the shelf life and gunking up the engine. He recommended TruFuel which is available from Home Depot and Lowes and it is 91 octane fuel with no ethanol. Has a 1 year shelf life. I've been running that stuff for over a year and not one issue with starting or engine running poorly. I know old school mechanics think that ethanol is horrible and I seem to be subscribing to that same ideas. Some mechanics also feel like this is why you don't get long mileage out of engines like people had in the past. Part of the reason my Jeep on order is a Diesel. No ethanol in the diesel in my area. \

Hope this helps some...
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Old 05-08-2014, 02:39 PM
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Re: Should I use REC 90 gas in my V8?

There is a Shell station by my office that sells ethanol-free 89 octane and it says "marine fuel" on the pump. I'd say one out of every three times I fill up someone comes up to me and says "hey you know that's boat gas!"

I'm assuming "REC" stands for recreational.

Go ahead and run it! As others have stated I usually see about a 8-10% bump in fuel economy when I use ethanol-free 89 compared to mid-grade that is labeled "may contain up to 10% ethanol". I feel like the Hemi runs smoother using ethanol free gas as well.
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Old 05-08-2014, 03:12 PM
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Re: Should I use REC 90 gas in my V8?

^^^^^

what "premium" do you pay for eth free 90 over reg 89
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Old 05-08-2014, 03:26 PM
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Re: Should I use REC 90 gas in my V8?

For me the ethanol-free 89 is usually 15-20 cents/gallon more than regular 89.
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Old 05-08-2014, 03:36 PM
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Re: Should I use REC 90 gas in my V8?

^^^^^

So unless my calcerlater is mehst up using your numberz let's call it a wash on cost/mile to go with better "reel" gas for the injun....cool.....gotta find me sum...
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Old 05-08-2014, 05:21 PM
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Re: Should I use REC 90 gas in my V8?

The $4/tank extra every so often isn't breaking the bank too bad. Also, I do appreciate you replying in a dialect that is easier for me to understand, being in SC and all. I wish more people realized my struggle to read that damn proper yankee english!


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Old 05-08-2014, 05:40 PM
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Re: Should I use REC 90 gas in my V8?




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Old 05-10-2014, 07:15 AM
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I have always used ethanol in vehicles and learn mowers, etc. with no problems. Everyone I know uses ethanol and nobody I know has ever had any type of problem that originated from the ethanol.

The are a lot of myths out there regarding ethanol and I have yet to see any become true. A lot of the myths have been started by companies so they can sell products to "clean" your engine from ethanol.

Every mechanic I have talked to has said ethanol is fine, get more power and better for the environment.

So if the ethanol "gums" up the motor then why has my lawn mowers been fine after sitting for a year in a shed and crank on the first try and never stutter.
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Old 05-10-2014, 08:20 AM
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Re: Should I use REC 90 gas in my V8?

"Husker" fan? No wonder you love ethanol!
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