Out of interest, going from a 60 to 70 mph cruise would require about 40%
more power from the engine, which may explian the relatively large increase
in oil temperatures.

Clive
T25 Syncro Transporter van

----- Original Message -----
From: "Kenneth Lewis" <kdlewis@JUNO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, June 30, 2002 4:14 PM
Subject: Reduced oil temperatures..

>         This list is great, I was just getting ready to battle the
> archives for this information when Mr.Grunthaner so generously saved me
> the trouble.
>          I just got done installing a VDO oil temp gauge on my WBX. Since
> I am using an oversized oil drain plug I had to locate the temp sender
> elsewhere. I ended up removing the oil filler tube and fabricating a
> plate to hold the sender and cover up the now open oil entry hole. I then
> replaced the oil breather tower with two CB Performance products, a
> "Hi-Tech Oil Filler" #1776 which screwed into "Crankcase Vent & Oil
> Filler" # 1744. These two parts made a new aluminum tower vent with oil
> filler cap on top(http://neksiwel.20m.com/images/oil1.jpg ). I was
> worried about increased oil loss but so far so good.
>         Over a year ago a list member made a seemingly outrageous
> statement;" I have noticed a ten to twenty degree reduction in oil
> temperature running the level at the bottom line of the dip stick..."!
> Specifically during seventy plus mph hiway driving.  Supposedly due to
> windage produced by the cam. I will be checking this out. I was surprised
> to see how quickly the oil temperature jumps from 195�F to 220�F when you
> increase speeds from 60mph to 70mph.
>
> Good Luck and Drive Safely
> Ken Lewis
> 86 Crewcab,60 356
> http://Neksiwel.20m.com/
>
>
>
>
> .....The Vanagon is a high stress application for any 2.0L engine. Oil
> temperature is critical. Shouldn't be much below 200 F and not above 235
> F.
> The heavy duty VW applications use a very effective thermostatic valving
> system to keep oil temperature above 180 F at all times. The oil must be
> hotter than 180 to get rid of sulfuric acid residues and other combustion
> byproducts., not to mention dissolved gasoline.