Oil Temp Gauge Marks -- The Real Temps
11-08-2004, 07:00 PM
#1
Nordschleife Master
Thread Starter
Oil Temp Gauge Marks -- The Real Temps
I always wanted to know what the tick marks corresponded to in real terms. Well, apparently the first tick is 90C (194F) and the second tick is 120C (248F). Who knew!
06-24-2023, 06:03 AM
#3
The 964/993 features a temperature (NTC) controlled, two stage oil cooler fan. I found the switch-on temperatures not documented, at least they are too high for my feeling.
After driving in summer in a traffic jam with constantly increasing oil temperatures, I switched the second stage of the fan to a switch on the dash that was not required (rear window heating).
With this I can manually switch on the fan with maximum power and usually keep the oil temperature below the first division line.
Fritz
After driving in summer in a traffic jam with constantly increasing oil temperatures, I switched the second stage of the fan to a switch on the dash that was not required (rear window heating).
With this I can manually switch on the fan with maximum power and usually keep the oil temperature below the first division line.
Fritz
06-25-2023, 12:10 PM
#4
Rennlist Member
The first tick above the bottom (the one that is only a hair off the bottom) is 50C or 122F.
Then, like you said, the first real tick (really the third mark from the bottom) is 90C/194F and the next tick is 120C/248F.
You go into the red zone at 11 o'clock at 150C/304F.
The oil cooler works as follows:
At ~87C/188F the thermostat opens and oil starts to circulate through the cooler.
At 100C/212F the CCU kicks on the fan at low speed
At 115C/239F the fan goes to high speed.
If the car never gets hot enough then any moisture that has condensed into the oil will not boil out. This can contribute to milky grossness, sludge, and decreased oil performance.
So the oil temp pictured in post #2 is right around 100C/212F, which is pretty much where I like my car to run under load.
Then, like you said, the first real tick (really the third mark from the bottom) is 90C/194F and the next tick is 120C/248F.
You go into the red zone at 11 o'clock at 150C/304F.
The oil cooler works as follows:
At ~87C/188F the thermostat opens and oil starts to circulate through the cooler.
At 100C/212F the CCU kicks on the fan at low speed
At 115C/239F the fan goes to high speed.
If the car never gets hot enough then any moisture that has condensed into the oil will not boil out. This can contribute to milky grossness, sludge, and decreased oil performance.
So the oil temp pictured in post #2 is right around 100C/212F, which is pretty much where I like my car to run under load.
06-25-2023, 11:35 PM
#6
Fritz
06-26-2023, 12:57 PM
#7
The first tick above the bottom (the one that is only a hair off the bottom) is 50C or 122F.
Then, like you said, the first real tick (really the third mark from the bottom) is 90C/194F and the next tick is 120C/248F.
You go into the red zone at 11 o'clock at 150C/304F.
The oil cooler works as follows:
At ~87C/188F the thermostat opens and oil starts to circulate through the cooler.
At 100C/212F the CCU kicks on the fan at low speed
At 115C/239F the fan goes to high speed.
If the car never gets hot enough then any moisture that has condensed into the oil will not boil out. This can contribute to milky grossness, sludge, and decreased oil performance.
So the oil temp pictured in post #2 is right around 100C/212F, which is pretty much where I like my car to run under load.
Then, like you said, the first real tick (really the third mark from the bottom) is 90C/194F and the next tick is 120C/248F.
You go into the red zone at 11 o'clock at 150C/304F.
The oil cooler works as follows:
At ~87C/188F the thermostat opens and oil starts to circulate through the cooler.
At 100C/212F the CCU kicks on the fan at low speed
At 115C/239F the fan goes to high speed.
If the car never gets hot enough then any moisture that has condensed into the oil will not boil out. This can contribute to milky grossness, sludge, and decreased oil performance.
So the oil temp pictured in post #2 is right around 100C/212F, which is pretty much where I like my car to run under load.
so should i consider ruf additional radiator on the driver's side?
Schmirler told me those cars shouldn't run higher than 85 Celsius
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06-26-2023, 09:16 PM
#8
Rennlist Member
I don't know. Under 85C makes no sense to me because the thermostat is closed until 87C. You'd never even use your oil cooler at 85C!
My BTR 3.8 has the RUF second radiator/AC condenser, it's a nice part but expensive.
If the picture you sent is "normal" for your car, I'd be perfectly happy with that.
My BTR 3.8 has the RUF second radiator/AC condenser, it's a nice part but expensive.
If the picture you sent is "normal" for your car, I'd be perfectly happy with that.
