Marvel Mystery Oil - Steel Soldiers::Military Vehicles Supersite

nk14zp · 03-14-2010, 18:18

Any one using this in the deuce?

zout · 03-14-2010, 18:21

I have allowed this in our fleet trucks and as well as Sea Foam products - these are great long standing mfg's with a great product that works.

4x4 Forever · 03-14-2010, 18:29

Quote:

Originally Posted by nk14zp

Any one using this in the deuce?

Put LUCAS in it Dale...

Grandfather used to put a pint per tank in all the cars he had. No problems from what I can remember, his mechanic even spoke highly of it.

maddawg308 · 03-14-2010, 18:30

I have used it to free up an engine that had been sitting unused for 15 or more years. Pulled the plugs, poured some in each cylinder, let it soak for 2 weeks, and it promptly fired right up next time. I did it just in case the pistons had stuck to the cylinder walls, I didn't have an idea of the history of the engine , so better safe than sorry.

mikes47jeep · 03-14-2010, 19:06

MMO is a good product

it seems to keep the gaskets supple and the jets clear in carburators

as maddawg said it is really good for breaking old engines free

its been around since 1923 so they must be doing something right

porkysplace · 03-14-2010, 21:04

I have regularly used in harleys and it seems to work really well at preventing carbon build up in the cylinders

wreckerman893 · 03-14-2010, 22:25

I use it for fuel............eerrrrrr...in the fuel.

Rossman · 03-15-2010, 08:54

I put seafoam in all my vehicles fuel

Srjeeper · 03-15-2010, 08:58

I've used MMO in the fuel system for many, many years and believe it keeps the fuel system working and clean. Put a quart in the Deuce fuel tank about three times a season and in my everyday vehicles at every oil change. It's also what I use as a stabilizer when I park something for the winter. I've never used it in the crankcase, but others that do sing it's praises.

stumps · 03-15-2010, 10:25

Here is an interesting article on oil additives. It was originally printed in Road Rider magazine in August 1992. Road Rider is now Motorcycle Consumer News. Dig in, it's pleasant reading:

Snake Oil! - Is That Additive Really A Negative? .: Articles

This is what they have to say about MMO:

Quote:

Many of the older, better-known oil treatments on the market do not make claims nearly so lavish as the new upstarts. Old standbys like Bardahl, Rislone and Marvel Mystery Oil, instead offer things like "quieter lifters," "reduced oil burning" and a "cleaner engine."
Most of these products are made up of solvents and detergents designed to dissolve sludge and carbon deposits inside your engine so they can be flushed or burned out. Wynn's Friction Proofing Oil, for example, is 83 percent kerosene. Other brands use naphthalene, xylene, acetone and isopropanol. Usually, these ingredients will be found in a base of standard mineral oil.

In general, these products are designed to do just the opposite of what the PTFE and zinc phosphate additives claim to do. Instead of leaving behind a "coating" or a "plating" on your engine surfaces, they are designed to strip away such things.
All of these products will strip sludge and deposits out and clean up your engine, particularly if it is an older, abused one. The problem is, unless you have some way of determining just how much is needed to remove your deposits without going any further, such solvents also can strip away the boundary lubrication layer provided by your oil. Overuse of solvents is an easy trap to fall into, and one which can promote harmful metal-to-metal contact within your engine.

As a general rule of thumb these products had their place and were at least moderately useful on older automobile and motorcycle engines of the Fifties and Sixties, but are basically unneeded on the more efficient engine designs of the past two decades.

I sometimes use MMO when I machine aluminum, mostly because I like the wintergreen smell. I also use WD40 and kerosene for the same job... usually I just use kerosene.

-Chuck