I picked up a couple liters of the Maxima 10 weight fork oil at the local cycle shop. The 10 weight says same as Harley Davidson type E, the 5 weight on the shelf said same as Harley type B. Hmmm, didnt the Moco use type B for the older damper rod type forks that didn't have the damper valve, which required the heavier weight oil? When did the Moco switch from the type B to type E in touring model forks?

 

Shovelheads 1970 and later used Type B which is supposedly 15wt

 

wow, and Maxima thinks type B is 5 weight...

 

right beneath the 5 on the label says Harley type B

 

Yeah, the OP recently posted the Maxima quote on my fork-oil-change thread. I thought Type B was between Type E and SE Heavy, but this will make me think again. I was going to buy some tomorrow, so I'm glad I read the references to the Maxima quote. I can't find any clarifying info on this with Google.

If we can't find out for sure I'll probably mix Type E and SE Heavy like Dawg did at one time. I understand he's now gone with fancy forks and doesn't use the mix anymore.

 

I was reading a previous post that gave all the wieghts of the HD fork oils that claimed the type E/5wt, type B/10wt, SEheavy/ 15wt, SEext.heavy/ 20wt., I can't seem to find the post right now but I did wright all this down for my own referance, I used SE heavy in the front forks and type B in the rear air shocks on my 09 E.G.

 

Seems like someone should perform some viscosity test on a couple bottles.

 

I've seen that one too and copied it to a text file I keep for info like that, although I don't have a link.

 

I've seen that too, I think it might be on a post somewhere in Iclicks thread about changing fork oil. Makes more sense than Maximas labeling, you would think that the E is a lighter weight for the newer forks. I've read a few posts that stated they thought the SE heavy was a little harsh on the 09 and newer forks, im going to start with changing to 10 weight in the forks and shocks first, I dont feel like I get too much fork dive under braking with the stock oil and am just looking for a little more damping, more so out back, soft on big hits even at 40 PSI

 

The SE heavy works well for me in the front forks, not to stiff a ride, I still have good control on these less than perfic roads here in Pa.
I have a 1" lowering kit in the front so that might make a differance versus stock fork height.