Marvel Mystery Oil question

[todda]

Hey, anyone try adding Marvel Mystery Oil to there Nautique gas? My father-in-law has started using it in his truck (deisel) and has been getting 3-4 mpg increase! This came after his dad, who was an old timer and mechanic was telling us that they used it in all of their gas as well as deisel just to help lube the engine. He was stating that with all of the additives in the gas and deisel, that it is wearing on the engines more than ever and has really decreased the efficiency as well.

I am going to start putting it in my deisel truck, and see what happens, ...then if it is proving true will put it into my baby (SN!)

marvelmysteryoil.com

Todd

[darrel409]

RE: Marvel Mystery Oil question

I use it, in the boat, its most often at the end of a season when it is going to sit for awhile.

[DanielC]

RE: Marvel Mystery Oil question

The most important influence on fuel mileage is how you drive. If you put some miracle ingrediant in your fuel, or "tornado air swirler" or cow magnets on your fuel line, the mere fact that you are looking for an increase, changes your driving habits, and that is the true cause of your improved mileage.
If you want to improve the mileage of your vehicle, the best way is to drive slower on the freeway, avoid stops, shut the motor off if you are going to idle for a while, get excess weight out of it, and check the tire air pressure.
For a boat, get weight out of it. Run the boat on a plane. The energy to create that huge wake is coming right out of the gas tank.
My opinion, the use of fuel additives, and oil additives is a waste of money, that just increase operation expenses. The exception to this is end of season storage. I use Sta-Bil fuel stabilizer in the fuel when the boat is layed up for winter, but not during the normal boating season.

[AirTool]

RE: Marvel Mystery Oil question

Marvel will likely foul your plugs and valves over time.

Continuous use not recommended.

[8122pbrainard]

RE: Marvel Mystery Oil question

I use the Marvel for end of season fogging mixed 50 50 with 30W oil. (in a pump can) Learned the method in 1968 when I worked at Watercraft Sales in northern Wisconsin. They had used it since it came on the market in the late 40's!! I also had a flat head that I rebuit and stored for 10 years that ended up with a couple stuck valves when I put it back in service. Marveled the gas and oil and in less than a minute no more stuck valves! That engine I do add the Marvel to the crankcase.

[DanielC]

RE: Marvel Mystery Oil question

Fogging oils have a lot of wax, or oils that are not liquid at room temperatures in them. An oil that stays liquid at room temperature will eventually run off the cylinder walls, and leave them exposed to air in the cylinder.
I do not know if Marvel Mystery oil leaves a solid film behind.
A flathead engine is actually more prone to stuck valves because the valve stem is below the valve head, and gunk can run down the stem into the valve guide, and stick there. On an overhead valve engine, the gunk tends to run toward the valve head, away from the stem. Additionally, engine oil slowly runs down the valve stem and that helps deposits in the valve guide get washed away.