T4216 is one high grade gear oil additive package.
this grade package reaches the requirement of API GL-5/GL-4/GL-3 grade gear oil and heavy duty industry gear oil as well.
with 4.2% dosage GL-5 gear oil have past CRCL-42, CRCL-37, CRCL-33, CRCL-60 bench test,
Match USS-224, AMGA250.04 requirement. 

Specification

Item	Limits	Test Methods
Kinetic Viscosity, 40℃, mm2/s	5-10	ASTM D445
Density, 15℃, kg/m3	Report	ASTM D1298
Flash point (open cup)℃	80min	ASTM D92
Chlorine, %(m/m)	None	ASTM D5185
Nitrogen, %(m/m)	0.5-1.0	ASTM D4629
Sulfur, %(m/m)	25-35	ASTM D5185
Phosphor, %(m/m)	1.2-2.8	ASTM D5185