HD Primary and Trans

[live_to_hunt]

My question is do I have to use Harley's primary fluid or can I just use something like 10w40 oil. My trans I use Belray 85w140 Hyphoid Gear Saver oil. Has any one used it?

 

[G-MAN]

I'm running B&M Trick Shift in the primary on my 09 Super Glide. I think Harley's Formula+ is just too thick for the primary.

As for the transmission, any good gear oil will do. I'm using Super Tech 75w140 full synthetic.

 

[PT1]

You can use 10w40 in the primary or a 15w40 HDEO like rotella. The BelRay gear oils are very good and have been successfully used in HD transmissions for many years. HD Formula+ is a 50w oil.

 

[live_to_hunt]

Thanks fellas I am going to put the Rotella in the Primary. I figure if it is good enough to run in those High pressure Diesel engines it should be fine in a Primary. G-man I was Holding the Supertech fluid in my hand the other day I really thought of putting it in my 01 Heritage

 

[kballowe]

I've run Rotella in my primary chaincases for many years.

 

[fuel tanker man]

Rotella has worked very well in the primary of my 1994 Low Rider also...

I often just get a quart of 10W40 though, when I can find it cheaper than Rotella. The Napa oils are made by Valvoline, and don't have much if any moly in them (if that's a concern).

As for the gear box, it's hard to beat Mobil 1 75W90. But I must admit, this last service I was out of Mobil 1 and I put in some standard Valvoline 80W90... we'll see how it does. I'll probably not leave it in there more than a couple thousand miles...

Dan

 

[PT1]

Originally Posted By: fuel tanker man

put in some standard Valvoline 80W90... we'll see how it does. I'll probably not leave it in there more than a couple thousand miles...

Dan


Why? It will go the full season no problem. Harley transmissions are not very hard on gear oil.