05-02-2016, 10:00 PM
(05-02-2016, 10:00 AM)DAC_imp Wrote: I've used T6 5w-40 in a VFR for years but it made the CB a little noisy. So I just use the standard Honda 10w-30 - GN4 I think. Not much different in price anyway. Still use the PureOne filters even though Ferret doesn't like the color.
I've had the same issues as Dac:
http://cb1100forum.com/forum/showthread.php?tid=1076
I think I may have been the first to post regarding heavier weight oil. I believe some bikes may have tighter passages than others and creates a lower knock in the motor. The same thing happens to Ford 5.4 Triton motors, running heavier oil creates a upper end block which blows head gaskets. Your bike may run fine but the oil is much thicker than 10-30 coming out of the bottle and @ temp.
Was on the road a few days and just came across this thread, hope this is helpful.