There is talk that BRP has been able to show some failure due to aftermarket oil not being up to par. I have not heard which one. Just a heads up.
Too many variables to blame failure on oil.There was a thread a few years ago that had an oil test chart in where they tested lots of different oil tested and how thet rated in it. The guy who did the testing said that he wouldn't run amsoil in his weed eater. I was I was better on the computer the I could find it lol.