Has anyone had problems with using redmax oil? I have used opti for the last 10 years and tried this redmax oil because a local didn't have opti in 2.5 gallon mix pouches. So they sold me red max and within a week I lost a trimmer. I thought it was old so thought nothing of it. The next week my redmax backpack dies. I think it's the oil. The equipment dieing is in the amount of use it getting. I fear my other equip is going to start to crap out. Anyone herd of any problems? When I tore down the wacker It seemed dry to what it usually is when Tear it down and inspect it. I took it to the dealer that sold me this crap, but I don't know what is going to happen.