Originally Posted By Uther
I never knew that about the venting either. Getting the thing off the nipple was always a battle until I discovered these things. The are superb and and making greasing so much easier

http://www.alemlube.com.au/product/quick-release-grease-gun-coupler/

Yes, they're brilliant. When I'm touring I always put an old nipple in the coupler after I've used it to stop any crud getting in.

1972 4/4 2 Seater