Mike Wilhite at Latus motors and I have been discussing how to compare stock Harley oil weights with other brands. If you are not already aware the "weight" listed by a manufacturer on their shock oil is not based on any kind of a standard for reference with other manufacturers. For example a 10 weight from one company does not necessarily compare with a 10 weight from another.

But here is a link to a chart that lists the Cst@40 measurement that is a measurement that can be used for accurate comparison.

The HD oils are not listed however the info from the MSDS lists the type B at 32, the type E at 35, and the SE at 66. You will get a real eye opener when you start comparing those numbers on a chart. For Example a BelRay 10w comes in right between the type B and E at 33. The Castrol 10w shock oil comes in at a rating of 15, so you can see what I mean about the rated w not being comparable.

I thought this is interesting and useful information.

Maybe a moderator could make this a sticky?




http://www.peterverdone.com/wiki/ind...spension_Fluid