MIL-PRF-7870D RADCOLUBE® 7870 Lubricating Oil

(Lubricating Oil, General Purpose, Low Temperature)

DESCRIPTION	REQUIREMENT	TYP. RESULT	TEST METHOD
Kinematic Viscosity, Centistokes			ASTM D445
@ 38 °C, minimum	10 cSt	17.4 cSt	ASTM D445
@ -40 °C, maximum	4000 cSt	2210 cSt	ASTM D445
Flash point, minimum	130°C	216°C	ASTM D92
Acid Number, maximum	Report	0.1mg KOH/g	ASTM D974
Evaporation loss, maximum @ 100°C	25 wt.%	9.8 wt.%	ASTM D972
Four point, maximum	-57°C	<-60 °C	ASTM D97
Precipitation Number, maximum	0	0	ASTM D91
Rust Protection, 100 hours	Conform	Conform	Specification 4.4.3
Corrosivity Test	Conform	Conform	Specification 4.4.5
Low temperature stability 72 hrs @ -54°C	Specification 3.4.3	Conform	Specification 4.4.4
Color of finished fluid, max	5.0	5.0	ASTM D1500
Corrosiveness and oxidative stability 168 hrs @ 121°C	Specification 3.6	Conform	ASTM D4636
Change in wt. of metals			ASTM D4636
magnesium	±0.2 mg/cm² max	+0.00 mg/cm²	ASTM D4636
aluminum	±0.2 mg/cm² max	+0.01 mg/cm²	ASTM D4636
copper	±0.6 mg/cm² max	-0.01 mg/cm²	ASTM D4636
cadmium	±0.2 mg/cm² max	-0.03 mg/cm²	ASTM D4636
steel	±0.2 mg/cm² max	+0.01 mg/cm²	ASTM D4636
Copper corrosion	<No.3 (ASTM D130)	lb	ASTM D4636
All metals corrosion, etching and pitting	Specification 3.4.5	No corrosion or pitting	ASTM D4636
% viscosity change @ 38°C	-5 to +20%, maximum	+7.5%	ASTM D4636
Neutralization # increase	0.20 mg KOH/g, max	+0.05mg KOH/g	ASTM D4636
Separation of insolubles or gumming of fluid	None	None	ASTM D4636
Workmanship	Conform	Conform	Specification 3.7