Castrol TRANSMAX Manual Z Long Life 75W-80

Worth knowing

The change interval in ZF gearboxes under the TE-ML 02 list is set by the class of the oil in the box, and of the three classes 02B, 02L and 02E, ZF TE-ML 02E gives the longest intervals. ZF attaches a condition: the 02E intervals apply only to gearboxes whose breather is routed by a hose to a dry place, and without such a hose, except on TraXon and buses, the 02L intervals apply. Manual EP 80W-90 from the same line is listed under 02 as ZF TE-ML 02B, so changing it on the 02E schedule would mean running it at least three times longer than ZF allows.

The 75W-80 designation, shared with Manual V, is no guide here: Manual V has no ZF, MAN or Mercedes-Benz code at all, only VW and PSA. Apart from this oil, the only one in the catalogue with the ZF TE-ML 02E class is Elf Tranself ZpV 75W-80, and there too it is an official approval. The full table of intervals for 02B, 02L and 02E, along with a breakdown of the MAN 341 and MB 235 codes, is in the article on what ZF TE-ML, MAN and Mercedes-Benz gear oil approvals mean.