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Campfire Oracle
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Campfire Oracle
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The oil can guitar thread got me thinking. I'm running unleaded gas in that old flathead motor in my tractor. The way I understand it, the lead in gasoline is the only thing that lubricates the valve guides in old motors.
I've heard of people mixing small amounts of various oils in unleaded gas to serve that purpose,...including Marvel Mystery Oil.
Any of you guys do that? If so, what's the ratio?
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Campfire Kahuna
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Campfire Kahuna
Joined: Sep 2011
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Any oil, diesel fuel will work.
These premises insured by a Sheltie in Training ,--- and Cooey.o "May the Good Lord take a likin' to you"
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Campfire Kahuna
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Campfire Kahuna
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lol
I thought that stuff was just colored kerosene when I used to hang out at the Napa
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Campfire Kahuna
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Campfire Kahuna
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What about all the engine oil burnt through the guides?
I am MAGA.
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Campfire Ranger
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Campfire Ranger
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Doesn't the station in Hickville have leaded gas?
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Campfire Tracker
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Campfire Tracker
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Look up zinc additives for older engines while you're at it.
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Campfire Kahuna
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Campfire Kahuna
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I put lead additive on my gas for 69 mopar, but I do that for the lack of hardened exhaust seats in my 906 heads.
Crappy, old rubber valve seals might allow enough oil to escape up and oil those guides for you. I don’t know about those old tractors, would some have bronze guides?
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Campfire Oracle
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Campfire Oracle
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What about all the engine oil burnt through the guides?
I guess that would serve the purpose if the guides are worn enough to allow oil to pass through. Years ago I worked in an automotive machine shop rebuilding heads. Those with wallered out valve guides would have the valve pockets caked with carbon from oil flowing up through them and getting burnt. So I don't know if engine oil would be a good substitute.
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Joined: Oct 2005
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Campfire Oracle
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Campfire Oracle
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I put lead additive on my gas for 69 mopar, but I that for the lack of hardened exhaust seats in my 906 heads.
Crappy, old rubber valve seals might allow enough oil to escape up and oil those guides for you. I don’t know about those old tractors, would some have bronze guides? I don't know. I doubt it. I'd guess that the guides are just machined into the block.
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Campfire Oracle
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Campfire Oracle
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Doesn't the station in Hickville have leaded gas?
There's hardly any place to buy leaded gas around here. One station about 30 miles away has it.
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Campfire Kahuna
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Campfire Kahuna
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Campfire Tracker
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Campfire Tracker
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I've heard of adding Marvel Mystery Oil to diesel fuel additives to increase lubricity of low sulfur diesel fuels and experimented with it years ago. I don't remember any mix ratios, but you might search on some of the diesel or other truck forums and find an answer.
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Campfire Tracker
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Campfire Tracker
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Get you a lead substitute for the gas, and Rislone makes an oil additive with ZDDP.
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Campfire Outfitter
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Campfire Outfitter
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A friend owned a truck maint. garage and told me Marvel Mystery oil is one of the best diesel injector cleaners available.
The Karma bus always has an empty seat when it comes around.- High Brass
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Campfire Oracle
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Campfire Oracle
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Yep,..apparently 8N motors have replaceable valve guides.
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Campfire Tracker
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Campfire Kahuna
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Campfire Kahuna
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It's actually to lubricate the valve seats and to prevent engine knock.
You can use a lead sustitute to take care of the problem.
Paul
"I'd rather see a sermon than hear a sermon".... D.A.D.
Trump Won!, Sandmann Won!, Rittenhouse Won!, Suck it Liberal Fuuktards.
molɔ̀ːn labé skýla
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Campfire Outfitter
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Campfire Outfitter
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Take some of the lead outta your ass and put it inna gas.
Its all right to be white!! Stupidity left unattended will run rampant Don't argue with stupid people, They will drag you down to their level and then win by experience
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Campfire Kahuna
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Campfire Kahuna
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Interesting.
Even though the flat head arrangement is different....I still don't know how the lead would lubricate the guides.
It pulls aif fuel past the guides...not through them.
After they went to positive seals....guides wore more quickly. Some consumption past the guides is necessary.
Unleaded gas will damage seats however.
Hmmm....Interesting.
Wonder how it was supposed to lubricate the guides?
I am MAGA.
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Campfire Oracle
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Campfire Oracle
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