Oils with the CAT TO-4 approval

Shell Spirax S4 CX 10W

partly verified: some specifications could not be confirmed from an official source

SAE 10W transmission and hydraulic oil for off-road machinery, approved to CAT TO-4 and ZF TE-ML 03C.

• CAT TO-4
• ZF TE-ML 03C
• Allison C-4 (no official approval)

Shell Spirax S4 CX 30

SAE 30 transmission and hydraulic oil for off-road machinery, approved to CAT TO-4, ZF TE-ML 03C/07F and DANA-OHTM-TO-30 21K-0006.

• CAT TO-4
• ZF TE-ML 03C
• DANA-OHTM-TO-30 21K-0006
• ZF TE-ML 07F

Shell Spirax S4 CX 50

partly verified: some specifications could not be confirmed from an official source

SAE 50 transmission oil for off-road machinery with CAT TO-4 approval, intended for heavily loaded final drives.

• CAT TO-4
• Allison C-4 (no official approval)