Engine & Gear Oil - Temperature and Viscosity Limits

Oil viscosity vs. temperature

Engine Oil

engine oil

Motor oil and appropriate viscosity vs. outside temperature indicated below:

Engine Oil
SAE Viscosity
Temperature
-20oF
(29oC)
0oF
(-17.8oC)
20oF
(-6.7oC)
40oF
(4.4oC)
60oF
(15.6oC)
80oF
(26.7oC)
100oF
(37.8oC)
20W-20              
20W-40              
20W-50              
10W-30              
10W-40              
10W              
5W-30              
5W-20              

Gear Oil

Gear oil and appropriate viscosity vs. outside temperature indicated below:

Engine Oil
SAE Viscosity
Temperature
-20oF
(29oC)
0oF
(-17.8oC)
20oF
(-6.7oC)
40oF
(4.4oC)
60oF
(15.6oC)
80oF
(26.7oC)
100oF
(37.8oC)
75W              
80W              
80W-90              
85W              
90              
140              

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