I have an Exmark LazerHP with a Kawi motor. I have been using kawi synthetic oil since new and the stuff (kawi oil) ain't cheap! I think I paid about 48.00 for six pack. Sooooo...I was thinking of switching to Mobil 1 and picking up some 5 quart jugs at the local Wally World. Any problem with running Mobil 1 in the Kawi motor?