I had five gal of mixed gas for my red max line trimmer. I also had gas for my tractor in five gal cans. Sometimes I add Marvel oil to the tractor gas. Don't know if it does any good or not. I grabbed the wrong can and added four oz of marvel oil to my trimmer gas by mistake. Do you think it will be a problem for my two stroke trimmer? I sure don't want to screw up my newest trimmer. Any thoughts? Stan