29-10-11, 01:00 AM
(28-10-11, 11:38 PM)Fazerider link Wrote: Since viscosity modifiers supposedly get chewed up worse by the higher speeds in bike gearboxes, wouldn't an oil like that (with a wider range than required) suffer more than a 10W40?
Yes it would. 10w40, 15w50 are longer lasting ones. 10w50, 5w40 would break up quicker. However, good quality full synth can hold well for 4000 mile change interval in a Fazer engine.
Most things done in a hurry need to be done again - patiently.