Mobile 1 motorcycle oil

[Silverfox@C&DRacing]

Not sure if this is old news or not but I noticed for those of you that use Mobile 1 they now have a MX4T 10W40 synthetic oil.

[cals400ex]

does this contain the friction modifiers? do they make any other weights? TC and sparks said i need to be using 20-50 year round. Tom at TC went on to say if i even put 10-40 in the bike just throw the cam away, because it is ruined. i thought that was stretching it but who knows. i realized that with 10-40 my oil seemed really really thin.

[T.Hopp]

I was using 20w-50 in my 400 until the cold winter months arrived. Upon start up, the motor made soo much noise that it worried me enough to drain it and refill with 10w-30. The thinner vicosity made a big difference.