Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Effect of gear oil viscosity on transmission efficiency (Metro owners take note)

tjts1 · 03-12-2008, 02:10 PM

75w90 gear oil is in the range of 10w40 to 20w50. The difference is in the additive package. The gear oil is designed for extreme pressure while engine oil is designed to withstand extreme temperature.

03-12-2008, 02:10 PM	#11 (permalink)
tjts1 Banned Join Date: Feb 2008 Location: california Posts: 1,329 Thanks: 24 Thanked 161 Times in 107 Posts	75w90 gear oil is in the range of 10w40 to 20w50. The difference is in the additive package. The gear oil is designed for extreme pressure while engine oil is designed to withstand extreme temperature.