Mobil1 98JA11 10W-40 Racing 4T Motorcycle Oil for Sport Bikes - 1 Quart (Pack of 6)

This is great oil for high rpm riding and racing, but it is NOT for daily street use.. the oil broke down fairly quickly for what u would expect.. i would not leave this in my motorcycle past 600 miles, you can definitely feel the friction on metal components once oil is going bad .. switched to Royal Purple w/o flushing and its been great since

You could get this cheaper at Walmart, which is where I started buying it at after this purchase. Walmart tends to stock these same containers that are closer to expiry date but has enough time to use it for a couple of years. And I sold at Walmart for under $10 each in store..

Used it many times. Makes things work better and improved mpg.

Can’t go wrong with Mobil 1

Exactly as advertised.

I did a bunch of testing to find THE oil that made the feel of my cop bikes' clutch perfect for the close quarters low speed riding I do on them. That turned out to be M1 20W50. I bought this stuff for my CB1100 grocery getter as a best starting point again for clutch feel. I'd have gone to the 20/50 if I needed to but this stuff felt great and I've never once come back from a ride and measured a cylinder temp out of the ordinary, even on the hottest days.

This full synthetic oil is the best oil I've ever used. The engine is completely clean after tens of thousands of miles when doing regular oil changes at 10,000 mile intervals. This oil is wet clutch safe for motorcycle applications.

The 10 Wt. is hard turning over in cold weather, over 5 Wt. other wise, OK.