Oil service on the E53 and E46 along with a set of FCAB on the neighbors E46 Covertible. I switched over to LiquiMoly 5W-40 because of my aging and high mileage engines and the BMW LL-01 specification. FCP Euro offers up a complete kit with 7 qts of Liquimoly, Mann oil filter kit with drain plug copper washer and the large oil filter housing cap o-ring and the 2 small o-rings for the lower cap to lower housing for about $60.
https://www.fcpeuro.com/products/bmw...427512300kt-lm