Name: Red Line MT-90 75W90 Gear Oil - Gallon
Brand: Red Line
SKU: red-line-red-line-mt-90-75w90-gear-oil-gallon-t14-503855
Price: 362.40 USD
Availability: InStock

Question 1

What is GL-4?

Accepted Answer

GL-4 is a gear oil specification defined by the American Petroleum Institute (API). It designates the type of additives used and the level of extreme pressure protection offered. GL-4 oils are typically recommended for manual transmissions and transaxles, where they provide good lubrication without damaging yellow metal components like brass synchros.

Question 2

How often should I change my manual transmission fluid?

Accepted Answer

The service interval for manual transmission fluid varies depending on the vehicle and driving conditions. Refer to your vehicle's service manual for the manufacturer's recommended interval. Severe duty applications, such as towing or racing, may require more frequent changes.

Question 3

Is this gear oil compatible with limited-slip differentials?

Accepted Answer

This gear oil is primarily designed for manual transmissions and transaxles. If your vehicle has a limited-slip differential that requires a specific friction modifier, you may need to add it separately. Refer to your vehicle's service manual or the differential manufacturer's recommendations.

Specifications

Red Line MT-90 75W90 Gear Oil - Gallon

Key Features

Specifications

Frequently Asked Questions

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