Had you just added oil or just had the oil changed? If so my guess would
be that the oil was overfilled and that played a role.

Check the oil when the van is perfectly level only. Check it several
times, wiping the stick each time, until the measurement repeats the
same indicated level. You really don't want it quite as high as the top
mark on the stick, and never above that mark.

Mark

Chris Paquette wrote:
> Had an unusual event in my '88 Westy a couple of days ago. I was heading up
> a long incline (the Sepulveda Pass on the Sepulveda Pass on the 405 in Los
> Angles) when I started to lose power badly. When I pulled over I saw a
> slight oil leakage on the pavement below the engine compartment.
>