I am thinking about switching over to a full Synthetic (Castrol Syntech
5W-50) from regular dino oil (Castrol GTX 20W-50) in my '85 Westfalia.  Are
there any special precautions I should take when making the switch?  The van
doesn't currently leak any oil and I haven't had any oil pressure troubles,
I would just like the extra protection that the full synthetic claims to
offer.

Thanks in advance.
Jay Brown
'85 Westfalia
'72 Riviera
http://www.geocities.com/vwcamper72