Mobil Delvac 1 Gear Oil 75W-140

MobilMobil Delvac 1 linegear and transmission75W-140

Fully synthetic high-viscosity API GL-5 75W-140 gear oil for heavily loaded truck and off-highway axles and gearboxes.

Classification
Product line Mobil Delvac 1 14 oils
SAE viscosity 75W-140What SAE means
Base oil fully synthetic
Intended use gear and transmission
API class What API means
Typical properties
Viscosity at 40 °C 182 mm²/s
Viscosity at 100 °C 25 mm²/s
Viscosity index 170
Pour point -45 °C
Flash point 203 °C
Density 890 kg/m³

Description

Mobil Delvac 1 Gear Oil 75W-140 is a fully synthetic, higher-viscosity gear oil for the heavily loaded manual gearboxes, drive axles and final drives of trucks, buses, vans and off-highway equipment, including units that operate at very low temperatures.

The oil meets API GL-5; the data sheet lists no equipment maker approvals.

Typical figures: 25 mm²/s at 100 °C, viscosity index 170, pour point -45 °C, flash point 203 °C.

The manufacturer does not recommend it for units where only GL-4 is specified.

Application

Heavily loaded manual gearboxes, drive axles and final drives in trucks, buses, vans and off-highway equipment, including operation at very low temperatures.

Worth knowing

At 25 mm²/s at 100 °C, this oil sits close to the lower limit of grade 140: according to the SAE J306 viscosity table, that grade spans 24.0-32.5 mm²/s. The 75W-90 oils in the range are noticeably thinner: Mobil Delvac 1 Gear Oil 75W-90 has 15 mm²/s and the LS variant 14 mm²/s, so a shared API GL-5 does not make them interchangeable. There is no other 75W-140 among the Mobil oils in the catalogue. The oils also differ in their codes: this one, like the LS variant, lists only API GL-5, while Gear Oil 75W-90 also carries approvals including MAN 342 Type M2, Volvo 97312 and Meritor O-95.

The data sheet names uses that the name does not suggest: winch reduction gears and tracked-vehicle drives in severe cold, and industrial reduction gearboxes, including hypoid and worm types. On the other hand, automatic, manual and semi-automatic transmissions that call for engine oil or ATF are not among its intended uses.

Data current as of Check the label and the current product data sheet before you buy.

Sources

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