Progressive Suspension10W Fork Oil Quart 31-0010

Does the job.

It's fork oil use what you want as long as it meets the specs.

I used this to replace my fork oil when I upgraded my fork springs to progressive form springs on my 2016 Harley Davidson sportster Forty-eight.The oil didn't really make any difference in the ride. which means this viscosity was similar to the OEM oil in the forks.

2017 victory octane motorcycle replaced oil and springs front suspention with a 2 inch spacer and works great if you go with recommended spacer you might bottom out and will be very low so on my motorcycle I added a 2 inch spacer instead of 1 1/2 as instructions suggest also stick springs are very soft and has a 4 inch spacer. this set up is for a scout but will fit the octane just fine and you can do it with out any special suspention tool just have a cap to remove the suspention cap forgot the size.

A perfect complement to the Progressive springs I installed in my Goldwing. Easy to change.

resisted aeration well, and the dark blue color and gradiations on the bottle made pouring the right amount of oil and checking level in the forks a snap.