Oil guzzling commodore

Join the club, Bill. Unfortunately it seems you're not alone. The problem is relatively common and has been recognised by Holden. According to a Holden spokesman, the problem has arisen on some manual V8s that have been driven hard in the intermediate gears for sustained periods. Take the car back to your dealer and get them to check the oil consumption. In some cases, Holden is rebuilding engines to overcome the problem.