I also had been running a Bell product for motorcycles and never had issues, then one day as I purchased a new bottle I noticed the recommendation for the ratio had changed for the same oil, it changed to more oil per gas! I was curios and made some calls... the result was they were getting some wear issues and decided to change the ratio. That very same season, some of my fellow pilots, running the same product, had several meltdowns.... (I believe it was more a product change). I then had an opportunity to try some REDLINE, I have never regretted it! I have noticed a little more junk on the bottom of my planes than I had before, but also think some of that is clean-out, however on a new engine than can not be possible. I also think it is easier to clean off than the junk before. I will not use anything else now!