[Vwdiesel] New head gasket

[Libbybapa@wmconnect.com]

In a message dated 10/24/05 9:05:07 PM US Mountain Standard Time, 
LBaird119 at aol.com writes:


>   I think it was finally (sort of) decided that the "oil cooler" is 
> actually 
> an oil WARMER.  Those that have oil temp gauges know that the 
> oil temp only rises above coolant temp when it's a turbo pulling a 
> long hill.  Even then it's only 20F - 30F higher than coolant temp, 
> as I recall.  It will however, warm up the oil much faster than it 
> would on its own. 
>   I believe someone actually found VW reference to it's purpose being 
> for faster warm up and lower emissions, better mileage, etc.
> 

I talked to someone who did a lot of testing with a gauge, running the cooler 
and then bypassing it.  All else being equal he claimed running with the 
cooler reduced oil temps on hills by a solid 30°F as opposed to bypassed.  He also 
claimed that once the engine was up to operating temperature the oil was 
always hotter than the coolant and so running the exchanger gave an across the 
board lowering of oil temps, just not as dramatic as on hills.  He did say that 
the oil took much longer to achieve N.O.T. with it bypassed, but ran hotter 
once there.  After doing testing he was fairly impressed at how well the thing 
worked.  
My big issue is that I just can't see recycling that heat back through the 
engine.  When I get around to installing an oil temp gauge, I will do similar 
experimentation and post results.  I know Shawn has a gauge, maybe we could 
twist his arm to bypass the cooler for a test or two.  :-)  I am also curious if 
Shawn would comment on what his oil temps are normally on a long flat stretch 
after achieving operating temp.

Andrew