Hot Climate Engine Oil?
12-23-2013, 12:25 PM
#31
Rennlist Member
Join Date: Feb 2011
Location: Mostly in my workshop located in Sweden.
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Thankyou Greg. 
Your post confirmed my thinking.
Ever since buying my '90GT it has annoyed me that it always ran a couple of needle widths hotter than my '89S4, particularly in slow traffic. It was extra heat I could/can feel in the cabin. Did all the usual fan operation and temp checks. No radiators blocked etc. Hmmmm. Winter months came and went and I thought little more about it.
Now driving the car regularly and with the summer temps here on the rise (35C for tomorrow) I noticed the coolant temp at 90C BUT the oil pressure getting as low as 4bar. Errrk.
Can only be one thing: hot oil. Hmmmm. Get under front and hose oil cooler from the rear to dislodge leaves, insects etc.
Then the penny dropped.
Well not so much a penny as an anvil, on my head from a great height (Wyle E. Coyote style): no cooling fans !!! WHAT? !!!
My BMW R1100S sports bike has the identical problem.
Vot iss eet veeth zeezse Germans? Do zey all sink ve all liff on ze autobahn?
Achtung. Got Himmell. Mine got, and all those other german war movie sayings.
Until I can set up a second cooler I'll fit a clutch of industrial-strength computer-style cooling fans across the back of the oil cooler. Same as I did for the R1100S.
Will post results of success or otherwise.
Cheers
UpFixen.
Your post confirmed my thinking.
Ever since buying my '90GT it has annoyed me that it always ran a couple of needle widths hotter than my '89S4, particularly in slow traffic. It was extra heat I could/can feel in the cabin. Did all the usual fan operation and temp checks. No radiators blocked etc. Hmmmm. Winter months came and went and I thought little more about it.
Now driving the car regularly and with the summer temps here on the rise (35C for tomorrow) I noticed the coolant temp at 90C BUT the oil pressure getting as low as 4bar. Errrk.
Can only be one thing: hot oil. Hmmmm. Get under front and hose oil cooler from the rear to dislodge leaves, insects etc.
Then the penny dropped.
Well not so much a penny as an anvil, on my head from a great height (Wyle E. Coyote style): no cooling fans !!! WHAT? !!!
My BMW R1100S sports bike has the identical problem.
Vot iss eet veeth zeezse Germans? Do zey all sink ve all liff on ze autobahn?
Achtung. Got Himmell. Mine got, and all those other german war movie sayings.
Until I can set up a second cooler I'll fit a clutch of industrial-strength computer-style cooling fans across the back of the oil cooler. Same as I did for the R1100S.
Will post results of success or otherwise.
Cheers
UpFixen.
Åke
12-23-2013, 07:45 PM
#32
Pro
You are forgetting - zees eese Gerrrrrmany - vere effery driveway connects to ze Autobahn, ja?
That designer probably went to BMW after he was kicked out of Porsche.
.
