> Hey List,
>         Today I changed my Castrol GTX 10w-40 (dino) winter oil for Mobil
> 1
> 15W-50 full synthetic on my 160,000 mi 2.1l Multivan. How long can I
> expect to run it before the next oil change?

I started running Mobil 1 in my engine ahortly after I bought my Vanagon 4
years ago with 124K miles on the clock.  It now has 189K miles with no
problems other than the occasional lifter bleed-down, which has been
occuring since my purchase.  I change the oil every 5000 to 7500 miles
depending on the type of driving I do.

I ran Mobil 1 in my now-sold Ford Aerostar from 24K miles until I sold it
with over 125K on the clock.  When the van had about 115K miles the intake
manifold gasket blew due to a stuck thermostat and resulting overheating.
During the gasket replacement I had to pull the valve cover gaskets and
was impressed with the clean valve covers and rockers.  I changed the oil
every 7500 miles in the Ford.

Chris S.
'85 Wolfsburg Westy "Camel"
http://www.knology.net/~vw/dadada.jpg