What is interesting is that this oil was once sold by Shindaiwa who got bought out by Echo, so now it is Echo Red Armor Oil. This is a good oil, but from what I have read, if you idle your 2 stroke equipment it can lead to deposits. How did I find this out, I conversed with a person on another forum who had been using the same 2 stroke oil that I was using, and he had issues with the exhaust screen clogging up. His thought was that cheaper 2 stroke oil is fine as long as you are running it at higher rpm and that will not lead to deposits.