[T3] 73 T-3 oil temp?

[Keith Park]

Quite a few varibles, what is your oil viscosity?  Oil light with 10W30 is
not as bad as with 25W50,
Still, its an indication of a worn engine, but not necessarily worn out.
The sender is also part of the equation, the good german ones come on at
5PSI,
The cheap ones don’t come on till there is virtually no pressure.

When the engine was new, the idle with 30wt on a hot day at about 12psi.

180 oil temp is cool
220 is starting to get warm
230 its getting warmer
240 its time to back off a bit, that’s hot, although it will tolerate that
for some time with good oil, but these are 
OIL temps, not the temp of the block, or the cooler, which is what you get
with a sender screwed into anything..  its heat sunk on the block
And is 20-30 degree's cooler than the actual oil around it.

Keith


Topnotch Restorations
topnotch at nycap.rr.com
http://www.topnotchresto.com
71 Squareback  “Hothe”
65 Notchback  “El Baja Rojo”
93 RX7  “Redstur”
13 Subaru Outback "Blendin"

-----Original Message-----
From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> On
Behalf Of William Jahn
Sent: Sunday, September 5, 2021 12:52 PM
To: type3 at vwtype3.org
Subject: [T3] 73 T-3 oil temp?

I just have VDO gauges oil pressure and oil temp. I know they are not dead
accurate . Yesterday I got stuck in traffic because of a parade . The oil
temps driving to my destination never got over 180F . Yet on the way back I
was stuck in traffic barely moving for over an hour and the oil temp read
just under 220 F the oil light would go on at idle , it was 94 F air temp .
If I put the auto trans in neutral the oil light would go out . I checked
the oil level later and was down 1/2 quart . Once I was able to start moving
the oil temps dropped .

 My question is since at idle the cooling fan is not moving much air plus
the 94 F was probably higher because of all the traffic other cars generate
heat.

 I've never had this happen before being stuck just the engine idling for so
long. I've had this oil light on after a freeway run on a hot day came to a
stop the oil light would be on then as soon as I hit the throttle it went
out.

 Is it just that the cooling fan at idle is running slow the reason the oil
temp would climb? Because the temps did drop back down to about  190F once I
was moving yet I didn't get to drive far enough to cool it back down to
180 F where it normally is. I would also place it neutral when this happened
to get not only the voltage to stay up it's 1,000 RPM in neutral and 850 RPM
in drive plus hoping the extra RPM would help bring the temps down. It
didn't, I had to be moving at least 35 MPH and kept it in 2nd gear so the
RPM's were about 2400 RPM.

William
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