Date: Fri, 27 Jun 2003 11:26:44 -0700
Reply-To: wilden1@JUNO.COM
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stan Wilder <wilden1@JUNO.COM>
Subject: Cooling your Oil.
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The best way to cool your oil is to buy an oil cooler kit.
It consist of:
1 Sandwich Plate for type IV engine.
1 Oil cooler (plate type is best)
Hoses, Clamps, Brackets, Some recent ones have fans.
(If you ever have the case split install a windage tray, notch the rods
and fit the pistons looser in the cylinders. All of these things help
considerably).
---------------------------
Check your cooling flaps on your engine, be sure the spring on the
crossbar opens them all the way.
When the one on the passenger side is open the airflow is directed to the
OEM oil cooler on the drivers side.
Your thermostat under the passenger side push-rod covers might be bad but
you can run without it as long as the cooler flaps are in the proper full
open position.
To test the position of the flaps. Remove #2 spark plug wire with the
engine cool, put you finger in the hole and feel backwards of the hole on
inside on the top, you should be able to feel the flap up against the top
sheet metal if it is fully open.
----------------------------
Ideal oil temps are 180-220 degrees. Absolute MAX is about 260 degrees
and when you see this you should slow down or just stop and let the
engine cool.
An oil temp gauge with a sender installed in the sump plate is a good
idea. (You aren't actually reading the temp of the oil going to your
bearings, you're reading the temp of the hot oil that is bypassed back to
the sump.)
An oil pressure gauge is the most important gauge you can install.
The oil temp takes about ten minutes to register a change so you often
are past that big hill and on the downside before you see a change in the
oil temp.
With the oil pressure gauge you get immediate readings and if you think
you're running hot it will normally show some slight drop in oil pressure
from the thinning oil long before the oil temp even moves.
Once you install the oil cooler, you'll see that the Oil Pressure and Oil
temp gauges settle in and will stay at the same reading until you go up a
big hill or encounter head winds.
Running at 70 mph and 3300 RPMs you should register 47 psi oil. The
bottom safe reading is 17 psi on end of life engines.
Most people run 20/50 w motor oil. Anything less than straight 40 w in
hot summers is a bad idea.
Stan Wilder
Stan Wilder
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