Do any one you use Marvel Mystery oil in your rotaries for any reason at all?

I've used it for premixing instead of 2 stroke oil in the past, it seems to work well. I also use it during engine assembly as the light assembly oil.

I used it to break down carbon in the apex seal slots of my 20B. It seemed to work really well.



It has some sort of solvent in it that ATF doesn't have. That's one of the reasons why it works better. It is also meant to burn where ATF is meant to prevent burning. I know this isn't a MMO vs ATF thread, but it seemed like a good idea to mention it.

yeah, the MMO shouldnt foul your plugs like ATF does.

apex seal lubrication/compression aid and general engine health. i've found that it's great for a lot of things. i never bought into the ATF-thing so i can't speak on it in comparison.

Ya I've used the stuff in the past for various things on my rotaries.

Pretty good ****- no complaints here

PK797 NYC

Thnks alot for every ones feedback very helpful!

I've been using it for quite some time now; about 4 oz per 16 gallons.



I used ATF for the engine soaking thing a couple times; I'm pretty sure thats what eventually clogged my catylitic converters up.

Dito.

Yet another nail in the coffin of the ATF myth.