I know a lot of guys add 2 stroke oil to aid in lubrication for their IP. I had an experince that is relative that I forgot to share. I was running a chain saw on TCW-III 2 stroke oil and the compression ring got coked up solid and it stopped running. If you are going to use 2 stroke, make sure it's the kind for a water cooled engine and not any old crap on the shelf. iirc the tcw-III would work for us but not air cooled engines. My point just being that they are all not the same. I use Marvel Mystery Oil only because it is designed to be burned in auto gas and diesel engines.