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EFV-8 Club Forum / General Ford Discussion / type of Gas to use

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Discussion Topic: type of Gas to use -- page: 1 2

mrtexas

03-16-2019 @ 10:47 AM

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Hot climate gas is different than cold climate gas whether it has ethanol or not.
In Alaska you need plenty of butane in the gas so it vaporizes in your
intake manifold.

mrtexas

03-16-2019 @ 10:44 AM

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Gasoline is a commodity. Don't believe the commercials. Premium is a waste of money for a flathead. I'd go with non ethanol if you can find it.
I worked at an XOM refinery for 32 years as a chemical engineer.

This message was edited by mrtexas on 3-16-19 @ 10:45 AM

JayChicago

03-15-2019 @ 9:58 PM

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My '40 came to me with an intermittent miss which turned out to be a sticky valve. For a year and a half, as I was able to resolve the car's other problems, that miss persisted. I had put MMO in the oil as recommended, but it made no difference. Which was as I expected; I am skeptical of "snake oil" fixes. But then one day I added MMO to the gasoline. The sticky valve miss disappeared immediately, within just five miles of driving! Now I am a born-again believer. I guess there are a few problems that can be fixed (or prevented) with the right chemical treatment.

51f1

03-15-2019 @ 2:09 PM

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Had a WW ll Navy surplus Kohler generator with a stickey valve back in the '60s. MMO fixed it.

Richard

MGG

02-28-2019 @ 1:49 PM

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I used Marvel Mystery Oil to free-up sticking valves in three engines, 2 v-8s and a Case tractor. The engines had not run for 25-30 years. I am a believer.

supereal

02-28-2019 @ 12:38 PM

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We use the non-ethanol premium gas. It is more expensive than gasohol, but will avoid "phase separation" that happens when the fuel is stored. This allows the fuel to separate into layers, making the often water laced alcohol accumulate where it can enter the system. Here, in the midwest where temperatures vary greatly, the extra cost is worth it. As to Marvel Mystery Oil, unless properly used, sparkplug problems can arise. To me, the "mystery" is why it is still produced.

Drbrown

02-25-2019 @ 9:30 PM

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I remember MMO back in the 50's but never used it. However, when I got my '47 half dozen years ago it came with noisy valves. Seeing its positive reputation on the flathead forums I tried it and it it worked fine .... continue to do so.

trjford8

02-25-2019 @ 9:32 AM

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Marvel Mystery Oil and can be purchased at almost any auto parts store.

gfstew

02-25-2019 @ 9:29 AM

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OK what is MMO

TomO

02-25-2019 @ 7:58 AM

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here is what the manufacturers say about their additives

https://www.amsoil.com/shop/by-product/fuel-additives/gasoline/p-i-performance-improver-gasoline-additive/

https://seafoamsales.com/product/sea-foam-motor-treatment-oil-fuel-additive/

http://www.marvelmysteryoil.com/products/

I have used MMO to free and prevent sticky valves and used Seafoam to clean cabon deposits and stabilize the alcohol fuel. It also has helped to prevent sticky valves in my Lincoln. I use regular 10% ethanol in my Mercury and add MMO a couple of times a year.

In the hot temps of the southwest, Seafoam might be a good idea to help stabilize the fuel.

Tom

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