[twisty]

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boomer wrote:

I've used mmo in the fuel on every bike I've owened with great success. I keep reading about some people draing the oil level down and putting a quart of it in the oil and running the bike for around two hundred miles or so before changing the oil. Has any one done it and what is thereason and what was the results? Can it do any harm to the seals or other things like the clutch?

Boomer, it's pretty well a proven fact that adding MMO to your oil, then running the engine for a few hundred miles, then draining the oil & changing it will quiet the engine for a while after the oil change...

I will be willing to bet that just before an oil change is due that rapping on the fuel tank lid right in the center below the key hole using the center knuckle of your left hand, then riding the bike for another 300 miles, then changing the oil will also quiet the engine for a while after the oil change..

I would also venture to say that draining the old oil first, then installing new oil with a quart of MMO, then riding a few hundred miles, then draining that nice new oil & re-installing the old oil will bring any engine noise you had right back again..

Here's the catch-- the old oil at change time has probably sheared down to some-where's in the 10W15 to 10W20 range & the new oil that is installed is probably something like 10W40 or 20W50.. You don't have to be an oracle to predict that outcome..


Put some MMO in your oil just before a changeif it makes you feel better as it sure won't hurt anything but I doubt it has anymore cleaning action than a good quality multi-weight oil does..


Twisty

 

[twisty]

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Hawker22 wrote:

How then do you explain how several people have drained out black gunky stuff after using the MMO, whereas previously, without the MMO, the oil drained out fairly clean?

Hawker, without an oil analysis test I can't say for sure.. A guess would be that seeing as that MMO isn't developed or blended for use as a motor oil it has a pretty high present NOAK volatility score so breaks down under heat & pressure way before motor oil would & it also probably has a very low flash point (that is why it can be used as a fuel additive) so would tend to evaporate off the liquid part & leave a carbonized residue in the oil.. More than likely the oil was just getting black to begin with.. I guess if a person had some handy they could put a little MMO in a small tin & place it on a hot plate, then do the same with motor oil & see how quickly the MMO turns black compared to motor oil..

Twisty

 

[twisty]

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mjohnson wrote:

If you MMO as an engine flush . . . Why not just use a TRUE engine flush product? I have purchased several old bikes over the years and using a good quality flush seems to - surprise - flush the crud out nicely. Just my 2 cents

PS - I have used MMO in the fuel seems to lub the carburetor slides - could be my imagination

Mike

Mike, you have to be very careful on using a strong or harsh aggressive crankcase flushing agent on the older Wings.. Those generator stators are none to hardy to begin with & have a rather poor protective coating on the OEMstator windings. Anything that is aggressive enough to remove crankcase sludge & varnishhas a good chance of also damaging the stator winding protection & stator shorting can result..

Twisty

 

[twisty]

imported post

Hawker22 wrote:

So you are saying that the dark sludge coming out after an MMO flush could be the MMO itself. Man, does the plot thicken. I just read the label on the bottle of MMO and it claims to do a whole bunch of good things to the inners of an engine when added to the oil. If it breaks down like you suggest, would the makers of it not have been sued by this time(since 1923) Guess I will put off using it in my engine until I hear some more about it.

If one were to keep very close track of the oil level and noted if it actually lowered during the 250 mile period of the flush, then your "liquid evaporation or burn off" of the MMO could easily be verified.

Hawker, lets look at this form another angle.. If an engine is sludged up inside there is just no way a modern detergent oil will go 2000-3000 miles & come out of that engineclean. SO, if the previous oil changes are dropping clean oil & adding MMO allows it to drop out black & gummy looking where's the black coming from?

Twisty