I'm at a loss as to why you would only have the oil light at higher
altitudes. Maybe the extended load of climbing to those altitudes? What
viscosity oil are you using? This will make a large difference. I use an
external oil cooler on the Fun Bus. However, oil cooling systems done
right cost money. I use a 16 plate Racimex oil cooler in front of the
radiator. High pressure Push-Lock hose and 5/8 copper tubes carry the
oil on this trip. A Perm-Cool brand t-stat allows the oil to reach ~ 180
before sending to the cooler. A standard sandwich adapter replaces the
original water-oil heat exchanger. Oil temp will normally run between
180 and 210. Extended high speeds in hot weather with the AC on will
bring it up to 230. Before the cooler, 260 was common. Also noted the
slightly overfilling the crankcase will raise temp drastically. Oil
pressure with this set up is still ~15 at idle and 45-50 at 4000 rpm,
oil at 210. Engine now has 187K on it. All original.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Daniel Danrich
Sent: Tuesday, March 12, 2002 4:35 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Cooler oil using a 2nd device or not?

Cooler oil using a 2nd device or not?
My oil light scares the hell out of me in high altitudes when it
flickers
on and off.
Should I put on a 2nd oil cooler or ?
Where can I get one if this is the case or just change the one on now?