Have a x485 with 325 hrs. Has been run since new with JD 10-30 non synthetic. Want to run 5-30 synthetic year round. Will this cause any problems? Thanks.
I have a x485 with 320 hrs. on it. When mowing engine will start running rough and start blowing black smoke out of exhaust that smells bad. This is an on+ off thing doing it occasionally. When running full throttle or partial. Have replaced all filters and spark plugs. Also doesn't have the...