Originally Posted by OilUzer
How about let's say a car with manual trans. going 35mph on flats or slight down hill @ 2300 rpm vs. doing the same rpm & gear going uphill or slight uphill?
will the heat from the bearings be the same since the same rpm? The temperature in cylinders (combustion) will obviously be much higher going uphill.
OilUzer...I had a caprice (Oz RWD) with the L67.
Using a type K thermocouple down the dipstick hole, I could measure the oil temperature right where the oil all drained back....method was to drive at 100km/h, drop it into neutral and turn the engine off and pull to the kerb. pop the bonnet and drop the T/C down the dipstick tube to the point measured the same as the "add" on the dipstick.
In drive, at 100km (15 km highway speed), 1,800RPM the oil read 95C regularly.
Drop it into 2, same speed, road, but nearly 4,000RPM...same road load, same "road friction" (I hear it's higher in some places and makes a difference), same pull over point, I saw 129-135C oil temperatures...with ILSAC 5W30s, or A3/B4 5W30s.
Only difference at all was the engine speed...road load, aero, all the same.
How about let's say a car with manual trans. going 35mph on flats or slight down hill @ 2300 rpm vs. doing the same rpm & gear going uphill or slight uphill?
will the heat from the bearings be the same since the same rpm? The temperature in cylinders (combustion) will obviously be much higher going uphill.
OilUzer...I had a caprice (Oz RWD) with the L67.
Using a type K thermocouple down the dipstick hole, I could measure the oil temperature right where the oil all drained back....method was to drive at 100km/h, drop it into neutral and turn the engine off and pull to the kerb. pop the bonnet and drop the T/C down the dipstick tube to the point measured the same as the "add" on the dipstick.
In drive, at 100km (15 km highway speed), 1,800RPM the oil read 95C regularly.
Drop it into 2, same speed, road, but nearly 4,000RPM...same road load, same "road friction" (I hear it's higher in some places and makes a difference), same pull over point, I saw 129-135C oil temperatures...with ILSAC 5W30s, or A3/B4 5W30s.
Only difference at all was the engine speed...road load, aero, all the same.