Joel Cort wrote:

> Kevin,
>
> The first culprit I would look at is the Oil Filter!
>
> If you are using anything but a MANN or genuine VW filter the relief
> pressure valve is not appropriately set for out Vanagons.
> The FRAM and BOSCH brands are NOT adequate oil filter.

> If you still have buzzer problem you may have other issues with bad
> low pressure senders.  How many miles are on this engine? You
> possibly could have an aging oil pump or weak engine bearings.

If 20W/50WT oil is not being used, put it in the engine when you go to
the MANN oil filter. 20w/50 wt is a one of the recommended oils for the
engine, and one used by many on this list, myself included.

Good luck.

John Rodgers
88 GL Driver