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Grade of gas to use in a Farmall H??

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John in Ct

07-20-2005 18:32:57

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I am sure that this has been asked a hundred times but what is the best grade of gas to use in a Farmall H? I am not so much concerned with cost as having the tractor run well. I am not using the H that much (Fixing things) so the cost will not be that much extra. We have alchohol in our gas, I think 10%. The book says "Good grade". I have been running 93 and I think it may be running a little rich. Thanks!!

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the tractor vet

07-21-2005 14:40:21

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Re: Grade of gas to use in a Farmall H?? in reply to John in Ct, 07-20-2005 18:32:57

You just keep on running that 93 Octain gas it will be fine Remember i fix tractors and i see the differance the gas makes and when i get into and engine i see what it looks like inside and can darn near tell ya what was burnt in it . As for worrying about the lead additives don't waste your money . I have gas tractors and i run the 93 in mine and have not had a problem they run cooler on the high test and if ya think i am kidding just park your donkey in the cab of the combine and fiil the tank with 87 and see where the engine temp goes then fill it with the 93 and it will run 30 to 40 degrees cooler . I have been there done that with this fuel thing and also show the differance on the dyno . Ya have to remember that way back when you could get real gas and it did have lead in it that reg gas was of the 93-95 octaine and hightest was above 100 and Sunoco 260 was around 107-109 And Clark was 105 Amaco lead free was in there at 105-106 . Tomany years building racing engines for the boys to play with and we would build as to the fuel and that is why we ran so well . So stick with the 93 and have less plug problems and don't worry about the Alkehol .

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Leland

07-20-2005 21:59:19

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Re: Grade of gas to use in a Farmall H?? in reply to John in Ct, 07-20-2005 18:32:57

Use lowest octane you can buy and just mix 1 cup of non dertergant motor oil with gas this will keep top end of motor lubeb , been doing this for years with no problems

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GordoSD

07-20-2005 21:04:38

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Re: Grade of gas to use in a Farmall H?? in reply to John in Ct, 07-20-2005 18:32:57

John, The 10% alcohol you mentioned, is it corn based fuel? "ETHANOL" If it is you don't want to use that. The big rap on the ethanol is that it does not keep well if nit used right away. Never use it in mowers, snowblowers, washers, etc. It must be used within a few weeks. Go with the regular gas with no blends. Be sure to add some Stabil" unless you use the entire tank full in less than a few weeks.

GordoSD

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RustyFarmall

07-21-2005 04:47:07

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Re: Grade of gas to use in a Farmall H?? in reply to GordoSD, 07-20-2005 21:04:38

That is a myth, I have been using the E-10 in everything I own since it was introduced way back in the late 70s. Lawnmowers, chainsaws, weedeaters, vintage tractors, and modern cars and trucks. I have never had a problem with it, and I do not use Stabil.

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captaink

07-21-2005 06:35:08

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Re: Grade of gas to use in a Farmall H?? in reply to RustyFarmall, 07-21-2005 04:47:07

Rusty,

You are the first I've heard that has run it in a chainsaw. I had been told by a chainsaw repair shop that the alcohol would not allow the oil in a two-cycle engine to lubricate properly, so I never tried it and always used regular unblended gas. Otherwise I run ethanol in everything (including lawnmowers and motorcycles) and have since the late 70�s also. I don�t use anything to stabilize it either, but I do make sure to run the carburetors dry before winter on the mowers and motorcycles. Once in a blue moon I�ll have some issues with extremely hot weather (like over 99 F) with the blend, but by using it I never have to worry about winter gas line freeze ups.

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RustyFarmall

07-21-2005 09:28:54

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Re: Grade of gas to use in a Farmall H?? in reply to captaink, 07-21-2005 06:35:08

captaink, I am probably the worst there ever was for not draining the tank and carb before storage. My Stihl chainsaw once sat for about two years without being started, and had about 1/2 of a full tank of fuel. Naturally I drained that out, put in fresh gas, and started the saw. It did run a bit rough for a few seconds but then smoothed out and ran as good as if I had just used it the day before.

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old

07-20-2005 19:29:36

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Re: Grade of gas to use in a Farmall H?? in reply to John in Ct, 07-20-2005 18:32:57

I run the cheapest stuff I can get and never have problems

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John M

07-20-2005 19:20:06

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Re: Grade of gas to use in a Farmall H?? in reply to John in Ct, 07-20-2005 18:32:57

Use regualr unleaded,no more than you say you use it the valves will be fine.Some add NO LEAD or thew like to the gas.Lead lubricated the valves.

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PAULIH300

07-20-2005 18:38:28

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Re: Grade of gas to use in a Farmall H?? in reply to John in Ct, 07-20-2005 18:32:57

Low compression engines run fine on low grade gas.High octane gas is a waste of money,as it has a lower volatility and wont light off as easily.You could even get misfires and dirty plugs! VW Beetles down in Mexico run decent on their low octane stuff....and thats because their compression ratio is LOW.No 9:1 or 10:1 down there.

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r-cubed

07-20-2005 18:52:04

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Re: Grade of gas to use in a Farmall H?? in reply to PAULIH300, 07-20-2005 18:38:28

Thye have more like 7 or 8 to one. 10-1 compression is considered a high compression modern engine. An H should run on the lowest octane you can find but it should have leaded gas. That's what I would be more worried about. Unleaded gas will eventually burn up your valve seats.

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Hugh MacKay

07-20-2005 19:44:48

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Re: Grade of gas to use in a Farmall H?? in reply to r-cubed, 07-20-2005 18:52:04

r-cubed: Bullfeathers, the H doesn't need lead, the engine will wear out from other reasons long before the valves burn. I got Farmall gassers, been going since the introduction of unleaded gas without any lead and no problems. Only one reason for lead, older high performance, high rpm engines, and that is not a gas Farmall.

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Thack

07-20-2005 23:04:15

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Re: Grade of gas to use in a Farmall H?? in reply to Hugh MacKay, 07-20-2005 19:44:48

I would have to agree with Hugh MacKay, we have two Farmall H that have been running on unleaded for a long time with no problems.

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Andy Martin

07-21-2005 04:57:19

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Re: Grade of gas to use in a Farmall H?? in reply to Thack, 07-20-2005 23:04:15

And the old dual fuel engines ran on tractor fuel, No.1 diesel, kerosene, whatever, and all those fuels were unleaded. IH engineers didn't make a mistake there.

Hard seats fixes the lead problem, and I thought all the letter series Farmalls had hard seats. At least all the ones I have done valve jobs on had them.

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dhermesc

07-21-2005 05:04:26

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Re: Grade of gas to use in a Farmall H?? in reply to Andy Martin, 07-21-2005 04:57:19

Seen something on this while back - I don't think lead was added to fuel back in the 30's and 40's, so the seats were as Thack said - already "hardened". No need for high octane levels as few is any engines had high compression - those that did use aviation fuel. Into the late 50s and 60's lead was added to boost octane for the "modern" higher performance engines.

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Rauville

07-21-2005 05:33:04

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Re: Grade of gas to use in a Farmall H?? in reply to dhermesc, 07-21-2005 05:04:26

I think leaded gasoline actually dates back to the early 1920's when GM and Standard Oil formed the Ethyl Corp. to market their product. By the 1950's and 60's the lead level was increased to aid the "new high compression engines".

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Ken Koch

07-22-2005 20:22:40

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Re: Grade of gas to use in a Farmall H?? in reply to Rauville, 07-21-2005 05:33:04

Did any of you people hear of "White Gas"? When I was growing up in the 40's and 50's, my dad would buy "white gas" for our lawn mower and the neighbor lady's B & S engine on here washing machine. Don't know what octane it was etc. but I think it didn't have any varnish in the gas. I think dad got it at the gas station but not sure. We always had some in a 5 gal. gas can. I think this gas may have been used in some lanterns also. (Like Coleman type gas lights and lanterns?)

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