Rear shock oil leak?

[coot]

Moved Nomad from garage two days ago to find oil on floor near starboard side rear air shock. Checked air pressure with zero loss pump and it still held normal 15 lb psi. Found oil on tire, bottom of swing arm, and lower shock bolt. Appears to be shock seal leak.

Question: 1. Is it possible to lose oil and not lose air?
2. Is oil and air in same chamber?
3. If oil seal is leaking, can I replace seal.
4. If seal can be replaced, how do I replace oil?
5. Parts fiche shows seals at mounting bolts. Is
this correct?

Would appreciate any suggestions. Bike is an 06 with 10k miles.