marvel oil amount

C

cfordman

Member
whats the recommended dosage of marvel mystery oil in the model a crankcase, and how much should be added to a 10 gallon gas tank? have oil ready to pour, trying to avoid sticking valves.
 
I would not add any MMO to the oil in the crankcase as it would dilute the lubrication the regular oil is providing. Adding it to the gas trank is more of a personal preference. But, enjoy your A either way.
 
I use the good gas and add 4 oz. per 10 gallons. I use this for all my small engines and Model A's.

If you have sticky valves now, then I'd add a can of Sea Foam to the gas and another can to the oil.
 
It says on the bottle 2 oz. in 5 gallons of fuel. That's what I use.

I don't add it to the oil.
 
I add it to the oil just before (a day or two,three) the oil change . MMO is great stuff but it's a solvent, not a lubricant. I'd put it before your last two runs, then run it and get the engine hot, let it cool and let it get hot again , then drain the oil. It should come out black. Then take your finger and put it in the drain and try to get a sample of the sludge in the crankcase. Then put about 3 quarts of fuel oil and lit it sit, maybe start it and let it run a few minutes, Only at idle! And flush out the oil galleries. Let it sit and then drain the Fuel oil. I'd use about 3-4 ounces of MMO. Use a DETERGENT oil when replacing. The oil screens will clog with sludge without it.
Terry
 
I would not start a motor with 3 quarts of fuel oil taken place of oil. Maybe 1 quart of fuel oil to 4 quarts of oil.
 
will stick with mmo in the gas tank. upon looking further on the peel back label mmo recommends 1 qt mmo to 4 qts oil. I don't have sticking valves and I have cleaned the pan when I fixed the oil tube problem. im trying to avoid valve problems due to the poor gas quality and the fact the car doesn't get started as often as it should. thanks guys...
 
There was a study concerning oil and gas additives posted on this forum a year are so ago. This study should be required reading for folks using additives.
 
Just Harking back to my flathead V8 days when we did this. Sludge was as much of a problem then as it was 30s. Obviously, you don't it long or run it fast. When I first heard an oldtimer tell me to do this, I thought he was kidding but he wasn't. We used it with the early Y blocks too. They were always clogging the oil galleries to the rocker arm shafts and the rocker arms would run dry.
Terry


Ed Northrop said:
I would not start a motor with 3 quarts of fuel oil taken place of oil. Maybe 1 quart of fuel oil to 4 quarts of oil.
Click to expand...
 
OK, It sounds as though your bottom end is in great shape so there's no need of any remedies. I wouldn't even use MMO with each tank of gas, maybe every second or third tank.
Terry

cfordman said:
will stick with mmo in the gas tank. upon looking further on the peel back label mmo recommends 1 qt mmo to 4 qts oil. I don't have sticking valves and I have cleaned the pan when I fixed the oil tube problem. im trying to avoid valve problems due to the poor gas quality and the fact the car doesn't get started as often as it should. thanks guys...
Click to expand...
 
Terry said:
Then take your finger and put it in the drain and try to get a sample of the sludge in the crankcase. Then put about 3 quarts of fuel oil and lit it sit, maybe start it and let it y
Click to expand...

Fuel Oil? As in Home Heating Oil, which is Diesel Fuel, which is a Kerosine? Your putting 3 quarts of Kerosine in your engine and running it?
 
Tom Wesenberg said:
I use the good gas and add 4 oz. per 10 gallons. I use this for all my small engines and Model A's.

If you have sticky valves now, then I'd add a can of Sea Foam to the gas and another can to the oil.
Click to expand...


Ditto and here we used it in a '97 F250 and the results were startling (good).
 
QGolden said:
Fuel Oil? As in Home Heating Oil, which is Diesel Fuel, which is a Kerosine? Your putting 3 quarts of Kerosine in your engine and running it?
Click to expand...

Diesel is close to #2 fuel oil (Home heating)

Kerosene is close to #1 fuel oil or Jet fuel A

They are not the same.

Marc
 
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cfordman said:
whats the recommended dosage of marvel mystery oil in the model a crankcase, and how much should be added to a 10 gallon gas tank? have oil ready to pour, trying to avoid sticking valves.
Click to expand...

0% in the crankcase and 0% in the gas tank. Snake Oil !
 
I use MMO in the gas and oil and it has never caused a problem. Too much in the gas can cause oily spark plugs especially if the ignition is a little cold like most. M<MO in the oil reduces friction and has a good detergent effect. If you really want to clean out a dirty engine, run it with a quart of automatic transmission fluid in the oil. This has worked for me. Everybody is on their own and I really hesitate to make recommendations on anything.
 
it apears to act as a fuel stablizer in my antique motorcycles.

winter experiment =1917 triumph one kick starter when cold ,fuel right out of the can 2 months in tank lots -O futzing to start. MM in gas same period starts fine , just my real experience thou..if it works dont fix

dont think I'd put it in the oil in a running engine but I have soaked stuck engines in it with amazing sucess !
 
Many years ago, when the dinosaurs roamed the earth, I took a power mechanics class in college as an elective. The professor supplemented his income with buying old cars and reviving them

He swore by the quart of automatic transmission fluid in the old for a few miles before an oil change. He said the ATF was very high in detergents and would clean out the inside of the engine.

I just acquired my 31 A and the oil has just been changed, but I plan to do this in a 1000 miles (or six months, which ever comes first).
 
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