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Message: [QUOTE="canyncarvr, post: 172126, member: 16552"] [b]Volume vs: level[/b] It's already been said...but to make a specific note about it, it's NOT a matter of volume, but level. Volume would work if you knew you had not a drop of oil IN the fork when you started...but that isn't likely. Besides, the level method is much easier. Put in more oil than you need. Using something like a large animal syringe (available at your local grange sorta store) and a piece of tubing attached to reach 100mm into the fork (for example), draw out the excess. With springs out, fork tube completely compressed, fork held perpendicular (90º) to the ground. Yes, you have to take the boots off. Make sure you've pumped the piston rod a few times to remove any air..let them set for a bit to let the bubbles clear. Oil of choice from j. wilkey is mobil-1 atf, btw. While you're inside, set the preload to something useable. OEM preload is w-a-y too much. Use a piece of 1" schedule40 PVC to make a spacer to a reasonable ...say maybe 10mm?...preload. If you happen to be using .40kg/mm springs, consider a set from a late model XR400. They're considerably longer than OEM (about 60mm longer). Moh spring is moh better than a piece of tubular steel! (imo) AND they're hot wound to boot!! As far as WHAT the level should be...100mm is a starting point. More oil for increased firmness, less for less. NOT to be used as a substitute for proper spring rate and valving! [/QUOTE]