Have 09 Heritage, 2" rush slip-ons, TFI tuner and Arness big sucker air cleaner. Question is I have ran mobil 1 in engine and when I did my 10,000 mile service I had Harley 20 50 oil on the shelf and did not want to waste it. It seems the valves have alot less noise to them. Is it ok to switch back to regular oil after using a synthic? After all the fluids chainges and clutch adjusment the bike sounds and runs great.
PaPa T
PaPa T