Bardahl oil, any good?

[Toecutter]

Dennis Kirk, 5W, 10W, 30W. If so, is 10W too heavy for the FJR?

 

[FJRay]

When I got the new springs from GP suspension they told me they use 10wt for the FJR. I have found that I need to run the compression a few clicks farther out than before but otherwise all is well.

 

[Geezer]

Don't forget that the weight of suspension fluids are not standardized across brands. A 10W in one brand may be significantly different from a 10W in another brand. It is well documented here.