-- [ Picked text/plain from multipart/alternative ] If you think a 60,000 miles for the camshaft and related parts is too short an interval perhaps you should look at a pair of Audi 2.8 l 30V heads that I own with every valve bent! I am planning to change my belts before 60,000 miles. Peter Badore (with 6 broken 2.8 l Audi V6 engines).