In a message dated 5/30/10 15 25 39, cengles at cox.net writes: > The ZF reference book doesn't actually say GL 4 or GL 5. The > red owners manual makes no mention of it that I can see. > It's there, on the last page of the owner's manual, page 72--it lists the quantity and type for all the fluids, including GL5 gear oil. FWIW.... Mike