15W-40 refers to an engine oil’s viscosity grade as defined by the SAE (Society of Automotive Engineers), indicating how the oil performs at different temperatures. The “15W” (W stands for...... Read More
15W-40 refers to an engine oil’s viscosity grade as defined by the SAE (Society of Automotive Engineers), indicating how the oil performs at different temperatures. The “15W” (W stands for...... Read More