What kind of transmissions is this Motul gear oil best suited for?

This Motul HD 85W-140 is ideal for mechanical transmissions, synchronized or non-synchronized gearboxes, gearbox/differential units, and transfer gearboxes. It's specifically recommended for applications experiencing shocks, heavy loads, low revolutions, or moderate loads at high revolutions, especially if the transmission is noisy.

Why would I choose 85W-140 over a 80W-90 gear oil?

An 85W-140 oil has a higher viscosity when hot compared to an 80W-90. This thicker oil film provides enhanced protection in extreme conditions like very heavy loads, significant shocks, or high operating temperatures, where a thinner oil might not offer sufficient lubrication.

Does this gear oil contain limited-slip additive?

No, this Motul HD 85W-140 is specifically designed for hypoid differentials without a limited-slip system. Using it in a limited-slip differential may affect its performance.

Motul 85W140 Transmission Gear Oil 20L 103719

Name: Motul 20L Transmission HD 85W140 20L - API GL-4 / GL-5
Brand: Motul
Price: 207.10 USD
Availability: InStock

Motul 20L Transmission HD 85W140 20L - API GL-4 / GL-5

$207.10

On Backorder

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Motul 20L Transmission HD 85W140 20L - API GL-4 / GL-5Tran Fluid Additive

Key Features

This is a 20-liter container of Motul HD 85W-140 mineral transmission gear oil.
Formulated for mechanical transmissions, gearboxes, transfer cases, and differentials without limited-slip systems.
Meets API GL-4 and GL-5 standards, as well as MIL-L-2105D.
Designed to handle heavy loads, shocks, and high speeds, reducing transmission noise.
High viscosity (140 at hot temperature) provides a strong oil film for extreme operating conditions.
Offers excellent lubricating power to decrease friction and wear.

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Product Details

When you're working on a transmission that's seen some hard miles, especially one that's prone to noise or heavy loads, you need a gear oil that can stand up to the challenge. This Motul HD 85W-140 is a mineral-based lubricant specifically formulated for mechanical transmissions, gearboxes, transfer cases, and differentials that don't have a limited-slip system. It's designed to handle those tough operating conditions, whether it's shocks and heavy loads at low speeds or high speeds with moderate loads.

What makes this oil a solid choice is its high viscosity, rated at 140 when hot. This means it forms a stronger oil film, offering better protection against wear and friction, especially in extreme conditions like heavy loads, shocks, or high temperatures. If the standard 80W-90 you've been using isn't quite cutting it for your particularly demanding gearbox, this 85W-140 is the step up you might need. It also includes anti-wear, anti-corrosion, and anti-foam agents to keep your transmission's internals protected and running smoothly.

This 20-liter container is a good amount for a full transmission fluid change on many larger vehicles or for shops that service a variety of equipment. It meets both API GL-4 and GL-5 standards, along with MIL-L-2105D, making it a versatile option for many applications that require a robust gear oil.