Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic Gearbox Oil (AOT) (Read 203 times)
dogshome
Junior Member
**
Offline


I Love YaBB 2!

Posts: 60
Location: Newark, UK
Joined: 09/20/19
Gearbox Oil (AOT)
04/21/20 at 14:41:56
Post Tools
Another Oil Thread Smiley

Synthetic 75W90 works well. Castrol MTX 75W140 work really well!

My shifting technique is getting better: Pre-load lever before changing, move your toe quickly and positively and don't let the revs drop too low dropping into second.

Haven't had a crunch or a grrrrrrRRRRR-K-Runch! for a while now.

Grin
  
Back to top
 
IP Logged
 
Justin B.
YaBB Administrator
*****
Offline


I love my Beemers

Posts: 5908
Location: Crowley, TX
Joined: 11/08/05
Gender: Male
Re: Gearbox Oil (AOT)
Reply #1 - 04/29/20 at 13:35:45
Post Tools
I use the thicker stuff in mine and it seems to shift better for me also.
  

Justin B.

2004 BMW R1150RT
1981 R100RT - Summer bike, NEKKID!!!
Back to top
WWW  
IP Logged
 
Tony Smith
God Member
*****
Offline


Graduate, Wallace and
Gromit School of Engineering

Posts: 2257
Location: Cairns, Australia
Joined: 07/23/13
Gender: Male
Re: Gearbox Oil (AOT)
Reply #2 - 07/22/20 at 22:13:21
Post Tools
I reject the use of synthetic oil on the basis of cost to no advantage.

However the input bearing on my R860 is on the way out and I must say that Penrite 85/140 has quietebned it a lot, along with a whole (small) tube of Moly for good luck.

I have ordered a shimming kit from Cycleworks and I already have the bearings, so hopefully I will do the rebuild in a few weeks time.

BTW, if you ever decide to do your own work on final drive or gearbox Cycleworks LLC is your go-to for the special tools and shims. I have beeen using their special tools for a long time now and the only one that has ever disappointed was their original tool for removing steering head races, I understand that their updated tool is much, much better.
  

1978 R100RS| 1984 R65 | 1992 KLE500 | 2002 R1150GSA | 2019 DRZ 400
Back to top
 
IP Logged
 
Barry
God Member
*****
Offline



Posts: 5008
Location: England
Joined: 07/07/08
Gender: Male
Re: Gearbox Oil (AOT)
Reply #3 - 07/23/20 at 06:34:44
Post Tools
I use synthetic 75W90 purely for the big reduction in cold oil drag in the winter.  I can't say there was any improvement in gear change quality, nor did i expect there to be.  This is a dog clutch gearbox with no synchros to be influenced by the chosen oil.   The only variable which will be influenced by oil viscosity, is how quick the shafts spin down during a change.
  

Barry Cheshire, England 79 R45
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint