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.
It makes the very important point that GL-5 is an oil spec rating, NOT a transaxle
spec rating. ... The choice between using GL-4 vs. ... It's simply because I've tried
many gear oils and GL-4 works while the others have caused issues .... Simply
because there is a difference in the formulation and you cannot make the general
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.
API stands for American Petroleum Industry and GL stands for Gear Lubricant,
see below for ... API GL-4. Medium EP, MIL-L-2105 quality, moderate severity
hypoid gears, manual transmissions. API GL-5. High EP, MIL-L-2105D quality, ...
What is the difference between a gear oil, an atf and an mtf and why are they.
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.
GL-4 and GL-5 are standards set by the American Petroleum Institute for gear oils
. GL-4 are intended for axles with spiral bevel and hypoid gears operating ...
Apr 3, 2005 ... I've been told that I shouldn't put EP90 GL5 specification oil in the gearboxes
because it will ruin. ... Differences between EP90 GL4 and GL5 ... GL5 gear oil is
a lubricant with very high extreme pressure performance needed ...