Cooling/ radiator question

[Huw Powell]

> Car runs good. I drive on the highway to get to work. It takes me about 30
> minutes
> 
> As temperature increases - oil starts to thin down.  I find that when I get
> to work my oil pressure/ bar gauge is around 1  Oil temp is at 60 and
> coolant temp is just above middle line at idle.  This is all happening on a
> 50 degree day.

Oil temp of 60 is way too low for a warmed up engine - it should get at
least slightly over 100 (C).  Also, oil pressure of 1 bar should
activate the oil pressure warning circuit, I think, and perhaps even
shut the engine down.

At warm idle, the oil pressure will be a lot lower than at revs - 1 to 2
bar isn't that odd.  But I don't know the V8, either.

My theory (and it's mine, all mine) is that perhaps your gauges are not
getting a good power or ground and are reading wrong.

> 
> A typical day I am driving this car at 80mph on the highway for 20 of the 30
> minutes.  Driving at 80 the bar pressure is at 5 and the coolant temp is at
> the middle line.

so obviously your oil pressure gauge *does* work.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/