No great mystery. Open filter canister, remove filter, replace orings on lid and shaft and then reinstall. Will make less mess if you open it while draining the oil pan.

Should take ~8qts to refill.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)