MAG 1 Heavy Duty Manual Transmission Fluid is formulated for use in
manual transmissions that undergo severe duty and extended drain
intervals. It is formulated with full synthetic base stocks and
advanced additives to provide outstanding cold temperature
performance and protect against corrosion, oxidation, and deposits.

MAG 1 Heavy Duty Manual Transmission Fluid is suitable for use in
applications calling for API GL-1, MT-1, Navistar/International TMS
6816, Mack TO-A Plus, Volvo I-Shift, Meritor O-81 and ZF Freedomline
as well as other extended drain heavy duty transmissions