TRANSELF SYN FE 75W-90 is recommended for mechanical gearboxes (synchronized or not) and axles in cars and trucks as well as construction and agricultural machinery in the most heavy-duty conditions. TRANSELF SYN FE 75W-90 is particularly recommended when there is a desire for greater ease of gear shifting in cold weather with satisfactory gearbox operation when hot.
TRANSELF SYN FE 75W-140 is recommended for lubricating mechanical gearboxes and axles differentials in the most heavily loaded conditions. TRANSELF SYN FE 75W-140 is particularly recommended when looking for greater ease of gear-shifting in cold weather as well as satisfactory gearbox operation when hot.