Originally Posted By: Mercurymarc
Can I use SAE 80W-90 gear oil in my 1960 Renault Caravelle transmission gearbox? I am having trouble locating the recommended SAE 80 EP in the USA. Thanks!
For bearings and gears protection, you should select 80W90,which is equivalent to ISO 150 gear oil.
Inadequate operating viscosity with lower viscosity grade, would wear out the worn bearings sooner , not later.