Originally Posted By: hardcore302
While I hear that MMO works wonders in the crank case, It freaks me out putting the same thing in your oil as in your gas tank.
I've had this discussion with a lot of people over the years, on Bitog, and with friends, I tell them the same thing. Try a pint for the last 1000 miles of your OCI if you are considering it, or feel that you need to add it, dirty engine, sticking lifter etc. Most people are very impressed and end up using it for a full OCI. I'm sure you've read more than one success story here about first time users being impressed with it. OTOH there are some people that will never use it because they fear it is some harmful solvent made to destroy their engine. That's cool too, I suggest to them not to use it. JMO