General Studies · IC Engine Lubrication System
In standard comparative gear and engine lubricant rating scales, an SAE 90 gear oil possesses a kinematic viscosity profile roughly equivalent to which engine oil grade?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1SAE 10W
- 2SAE 40 / SAE 50✓
- 3SAE 5W
- 4SAE 20W
Correct answer
SAE 40 / SAE 50
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