Riding my GT for about 2.5 HRS, at 65F outside temp, then took a Infrared Thermometer to check some temps.
Water, into engine 158F engine out 168F.
Oil Temp, At reservoir 158F at filter 152F.
Final Drive Case, 102F.
I use Amsoil 10W-40 Motorcycle oil so the temps may be a little lower. The one thing I feel is on a hot day 100F+ you would not exceed oil temps of 200F or water temps of 180F, final drive possibly 120F. That would mean you could use miner base oil and not hurt the engine and you would not be operating within the intermediate range for the oil which would be 225F for mineral base and 300F+ for synthetic.
Looks as if the thermostat is possible 160 or 165.
Final drive, I do not understand why the chain would need replacing at 12K. Running at that low temp in oil should not be a wear problem or stretch problem so why are we paying for something we may find is almost at new specs. If the chain is replaced the sprockets also should be changed or the new chain will have the same wear as the old one in just a few miles.
Can anyone answer why other than BMW said so.
Water, into engine 158F engine out 168F.
Oil Temp, At reservoir 158F at filter 152F.
Final Drive Case, 102F.
I use Amsoil 10W-40 Motorcycle oil so the temps may be a little lower. The one thing I feel is on a hot day 100F+ you would not exceed oil temps of 200F or water temps of 180F, final drive possibly 120F. That would mean you could use miner base oil and not hurt the engine and you would not be operating within the intermediate range for the oil which would be 225F for mineral base and 300F+ for synthetic.
Looks as if the thermostat is possible 160 or 165.
Final drive, I do not understand why the chain would need replacing at 12K. Running at that low temp in oil should not be a wear problem or stretch problem so why are we paying for something we may find is almost at new specs. If the chain is replaced the sprockets also should be changed or the new chain will have the same wear as the old one in just a few miles.
Can anyone answer why other than BMW said so.