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.
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 ...
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-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.
API GL-1. Straight mineral oil. API GL-2. Mild EP for worm gears. API GL-3 ... 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 they.
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 ...
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
The choice between using GL-4 vs. ... If you are thinking about using a GL-5 gear
oil understand that it was designed .... Simply because there is a difference in the
formulation and you cannot make the general statement that GL-5 is ok to use.
So that post essentially explains GL-4 vs GL-5. The difference between GL-3 and
GL-4 is that GL-4 has a higher ... designed to test gear oils and simply put a GL-4
oil will sustain more load carrying capacity than GL-3. GL-4 ...