Oil & Fuel STOU or TOU oil in my 7274 Cub Cadet ???

[B52]

My manual says to use STOU or TOU oil in my 7274 Cub Cadet (with FEL) gear type transmission. What is this stuff ? It doesn't give a weight or anything else, only the letters. Can I buy an equivalent oil at Tractor Supply ?

 

[OldMachinist]

STOU stands for super tractor oil universal. Castrol sells one called Agri MP Plus. Mobil calls it Agri Super. These oils can be used in the engine, transmission and hydraulic systems.

Typical Properties

Mobil Agri Super Multigrades

SAE Grade 10W-30
Viscosity, ASTM D 445
cSt @ 40ºC 78
cSt @ 100ºC 12.1
Viscosity Index, ASTM D 2270 150
Sulfated Ash, wt%, ASTM D 874 1.5
Total Base # , mg KOH/g, ASTM D 2896 10
Pour Point, ºC, ASTM D 97 -36
Flash Point, ºC, ASTM D 92 215
Density @ 15ºC kg/l, ASTM D 4052 0.88