[HarryD]

Trond:

You should be able to get some good oils locally that may be less expensive. You are looking for high Zn/P numbers and a decent detergent package.

A trip to your local Auto Supply houses and perhaps a chat with some of the local wrenchs may reveal a better deal for you. You can always look the data up on the vendor web site and/or pay for a virgin oil analysis to confirm.