currently I'm using RL 80W-140 GL5;
Assuming that the slight noise could be quieted by lube, what brand, weight, type would be the best option ?
If Schaeffers is it, what # of the following would be the most reasonable ?
#167 75W-140
#209
#209A SAE80
#239S
#239 80W-90
#293 75W-90
#740 EP...