F650GS fork oil levels

Hi

I have an 08 plate F650GS and have an ongoing problem with what seems to be a fork oil seal leak.

I have swapped out the seal [again] and had a good look at the stanchions. There was a very small amount of pitting that I have dressed out.

My query is the fork oil capacity in my Haynes manual is @ 530ml with a 100ml air gap to the top of the stanchion. When I have refilled again today I have used over 600ml [roughly measured by the oil bottle] to achieve the correct air gap.

Would anyone know the correct factory fill levels for these forks - my concern is that an overfill will increase the internal oil pressure and could be the cause of it passing the oil seal?

TIA

D J

Others have had this confusion, go with the air gap (collapsed fork and spring out).
If it isn't the pitting causing your leak, check for okay in the bushes.

Timolgra said:

Others have had this confusion, go with the air gap (collapsed fork and spring out).
If it isn't the pitting causing your leak, check for okay in the bushes.

Click to expand...

Cheers - have the correct gap now. Replaced bushes while I was in there so we'll see how it goes