I bought a 93/94 Giant ATX 770 bike yesterday for $50. It came with DX hubs, front derailleur and canits. it also came with an old Trek Mogul air fork.

I like projects, so I bought this one to rebuild it with some of the original components and some I have lying around, just something to keep my hands busy.

About the fork. It does hold air, at lease for 24 hours, but I have no clue when it comes to air/oil shocks. I could look around the net but I have no idea if these shocks are similar to others and if the info would be helpful.

What can I do to the forks as preventative maintenance? If it holds air, does anything have to be done? How do I check or replace the oil in the shock? How much and what type of oil do I use, so on and so forth.

Many Thanks,
Ian