Gear oil is a lubricant made specifically for transmissions, transfer cases, and
differentials in ... Also, transmissions which explicitly call for GL-4 oil may have
been designed around this lower ...
The Difference between GL-4 and GL-5 gear oils. 2 of 11. A traditional GL-4 gear
oil of any given viscosity has about ½ of the level of sulfur/phosphorous.
GL-1, Active, The designation API GL-1 denotes lubricants intended for ... API GL-
1 service but below the requirements of lubricants satisfying API GL-4 service. ...
protection from gear scoring in excess of that provided by API GL-5 gear oils.
75W90 GL-4 gear oil (similar to SAE 5W40/10W40 engine oil viscosity); Popular
... in most GL-5 oils that cause damage; High performance gear protection and ...
Now since it is impossible to get any street driven gear oil to that ... The difference
between GL-4 and GL-5 is the extreme pressure capability.
Apr 3, 2005 ... Differences between EP90 GL4 and GL5 ... GL5 gear oil is a lubricant with very
high extreme pressure performance needed for Hypoid gears ...
Sep 13, 2011 ... If you go to an auto parts store and look for GL-4, you most likely won't find any.
What you will find is a lot of of GL-5 gear oils that say on the ...
Some say to use GL-4 like in the transmission, but others say that GL-5 is O.K.
since ... The problem in the past with some Sulfur EP additive packages in gear
oils and ... The problem is the difference between what is called active and
Nov 18, 2015 ... When someone tells you that their GL-5 oil covers GL-4, remember they are
correct as far as EP protection,but that is only half answer.
API GL-4. Medium EP, MIL-L-2105 quality, moderate severity hypoid gears,
manual transmissions. API GL-5. High EP, MIL-L-2105D quality, all hypoid axles,
some ... What is the difference between a gear oil, an atf and an mtf and why are