General Studies · Engine Auxiliary Systems
According to the standard SAE J300 engine oil rheology classification, single-grade oils like SAE 40 and gear oils like SAE 90 have their kinematic viscosities specified and tested at a standard high operating temperature of:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1210°F✓
- 2150°F
- 3100°F
- 40°F
Correct answer
210°F
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