75w 85w gear oil?

Hi guys,
75w 85 is hard to find over here, everybody uses 75w 90. However I could find this tranny oil... GS caltex Oil 75w 85w, why the second w? 2 low temperature viscosity numbers? lol, is that a misprint or what?? pic attached

any thoughts guys?

do this properties look ok?

KEY PROPERTIES
SAE Grade --- 75W/85 W
Density,kg/liter@15˚C --- 0.856
Kinematic Viscosity,mm2/s@40˚C --- 63.57
Kinematic Viscosity,mm2/s@100˚C --- 12
Viscosity Index --- 189
Pour Point,˚C --- -42
Flash Point,COC,˚C --- 210

API Spec GL4 rating is what you want not API Spec GL5, apparently the shifting is not so good with GL5. I have some 75w 90 API Spec GL5 gear oil left over from a previous vehicle I had and I won't use it in the gearbox (would be ok for the front diff though). When I change mine I'll get SAE 80 API GL4 Spec, you can also get 75w 85 API Spec GL4 too, it's a bit confusing really.
If you can find API Spec GL4 on that oil your looking at then you should be fine.
Duh, I just checked the photo you put up again and it clearly shows API GL4 so go for it.

thanks mate, I was aware of the GL4 thing... its just Ive never seen that 75W 85W, gonna put the oil in tomorrow