Originally Posted By: badtlc
Originally Posted By: Trajan
The other is mostly kerosene dyed red with a 10wt oil carrier. All the stuff that does the cleaning has a low flashpoint such that it's gone in less than 20 minutes.
For whatever reasons, MMO does "not" flash off when in the sump. I'm not a believer in MMO, but I am running it currently in the escape at 20% and I have 3k+ miles on it so far and zero loss in oil level. I have even been running it in high RPMs for extended periods to get things as hot as I can.
I can't say i have any proof it is cleaning anything, either. I just wanted to say me, and many others, have not seen MMO flash off when added to the sump.
I used the stuff for alot of years. In a dirty engine that has good rings, guides and seals it doesn't flash off. In engines with some signs of wear you might use some oil. I think the flash off is people with some engine wear or in need of valve guides or seals sounding off, or maybe rumors spreadin'.
A few years back we tossed a qt of it into a friends Ford 351 powered boat, to stop a tick and free up what we thought might be a sticking ring. Thru the fill hole was dirty looking and he had bad compression in 1 cylinder. He started using a bit more oil with Marvel in the sump. We ran it for 50 hours, and checked compression, it was good across the board, the tick was gone too. I taked him into pullin the valve covers and the stem seals were shot. We broke out the compressor changed the stem seals, no more oil use. Under the valve covers looked good too, a lot better than thru the fill hole 50 hours earlier.
I still reach for it for solving problems before yankin engines apart. The older i get the smarter i work, @ about $5 a qt. it sure beat rippin that old 351 apart to see what was wrong in the weak cyl.