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

Exactly as advertised.

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

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..

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

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.

What is there to say? This is the most recommended oil by manufacturers and people you talk to for sport bikes and several other bikes. Put this in my cbr650r and could go several thousand miles before changing.

It is hard to tell why, but my oil came out darker with this oil. I am religious with my changes with my 2017 FZ-10, so it went thru the same factors as my Castrol Power1, and that oil twice now came out cleaner. In my mind means this oil breaks down faster. Again, take it with grain of salt, just my point of view.