With regard to fork oil viscosity for bikes with sidecars. I have read several threads which recommended going to a heavier fork oil when a sidecar is mounted on the bike. I am currently in the process of replacing the seals and cover on the forks of my Honda Interstate and was wondering if I should automatically go to heavier weight fork oil and, if so, what weight is recommended.
Bljacque
If using conventional oil, for Honda's a Heavy Duty Fork oil works. On Harley's that would be "Screamin Eagle" fork oil.
Namely something of a little higher viscosity than OEM usage.
We prefer to use synthetics like Amsoil STM #10.
Lonnie
on my Harley's HD recomends the "A" oil in the low rider and "B" in the sportster. the Amsoil equivilent is STM#10 I have been having bottoming out problems with the sportster. I use Amsoil in the engine and transmission. Would the STM#10 be heavy enough or do I need to go to something else?
The #5 is for quick rebound(lighter viscosity). #10 is For slower rebound.
That's as high as the Amsoil shock oils go.
I think The Harley "B" is the same as their "Screamin' Eagle" fork oil for racing purposes.
Lonnie
