Eni Rotra MP 75W-90

Worth knowing

This oil’s data sheet lists MAN 341 Type Z2, the code for MAN synchromesh gearboxes, without the “Approved” mark that Eni puts beside its ZF classes, so the catalogue lists it as compliance. The sister oil Eni Rotra LSX 75W-90, of the same viscosity grade and with the same API GL-4, GL-5 and MT-1, does hold the MAN 341 Type Z2 approval. It is not a full replacement: MAN 342 Type M3, Scania STO 1:0 and ZF TE-ML 16B appear only in the MP 75W-90, while in the LSX ZF TE-ML 16F stands in place of 16B. The LSX has a pour point of -48 °C against -42 °C here, and at -40 °C it measures 127,000 mPa·s against 135,000 mPa·s.

An approved oil is one that the unit’s manufacturer has entered in its own list, while “meets” is only the oil maker’s own claim. Where to find such lists, and what to ask for when they are not public, is explained in the article “Approved, meets, recommended: how do you check an oil approval?”.