The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: manxr65 on March 30, 2010, 12:25:54 PM

Title: fork oil
Post by: manxr65 on March 30, 2010, 12:25:54 PM

please can anyone tell me how much fork oil to put in each leg and what grade 10 or 15 etc.
thanks
79 r65

Title: Re: fork oil
Post by: Bob_Roller on March 30, 2010, 01:52:57 PM

If you are just draining and refilling the forks, 190 ml of oil is required per fork leg, if you disassembled the forks, for a seal change, bump it up to 220 ml .

The standard fork oil for the R65, is 7.5 wt, only available from a BMW dealer, or repair shop, haven't seen it anywhere else .

If you can't source it locally, 10 wt oil will work as well .

Title: Re: fork oil
Post by: Barry on March 31, 2010, 03:43:06 AM

Also if you can't get 7.5 wt it's perfectly OK to blend 5 wt with 10 wt but you must to stick to the same brand for consistent results.

A way of checking for the correct amount of oil is to use something like welding rod as a dipstick. With the forks fully extended your dipstick can be lowered through the filling hole and should measure a level of 35mm + or - 15mm  

Title: Re: fork oil
Post by: Bengt_Phorqs on March 31, 2010, 12:22:34 PM

Bob Is The Oil Guy is a really informative website about lubricants.
http://www.bobistheoilguy.com/cms/
This will tell you more than you could ever have possibly wanted to know about lubes.