ACDelco GL-5 75W-90 Synthetic Power Transfer Unit (PTU) Lubricant helps improve fuel efficiency, reduce operating temperature, and improve thermal stability. GL 5 gear oil possesses high extra pressure (EP) effect. It is used in hypoid and other highly loaded gears. This gear oil is a heavy-duty, extreme-temperature-pressure GL-5 axle lubricant. It is designed to withstand the high temperatures encountered during extended high-speed operation and heavy towing while also retaining excellent fluidity at cold temperatures. The fully synthetic formulation offers oxidation and thermal stability. The formula contains superior oxidation resistance and longer seal life. This gear oil also keeps the power transfer unit lubricated to help allow efficient power transfer to differentials. ACDelco GL-5 75W-90 Synthetic Power Transfer Unit (PTU) Lubricant has been formulated to meet your expectations for durability and longevity. ⚠
| API Rating | GL-5 |
| FAQ - Answer 1 | Yes. Most differentials and transfer cases are designed for use with a specific oil. Consult owner's manual for the correct fluid to use. |
| FAQ - Answer 2 | No. GL-4 and GL-5 gear oils may not be interchangeable due to the differing viscosity and limited slip properties. For best results, use the oil recommended in the owner's manual. |
| FAQ - Answer 3 | Yes. Most vehicles, both heavy duty and passenger car, now require a specific type of oil for each vehicle type and model. For best results, use the oil recommended in the owner's manual. |
| FAQ - Question 1 | Are there different gear oils for front and rear differentials? |
| FAQ - Question 2 | Are GL-4 and GL-5 gear oils interchangeable? |
| FAQ - Question 3 | Are there different types of gear oil for heavy duty and passenger vehicles? |
| Good Maintenance Practices - Section 1 - Bullet 1 | Refer to your vehicle's service manual for use, filling, and change interval recommendations and the owner's manual for vehicle applications. |
| Height (in) | 7.75 |
| Length (in) | 5 |
| Programming Required | No |
| Proper Disposal Verbiage | All laws and regulations should be observed when disposing of this product. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 1 | Signs of contamination (water or other fluids mixed with gear oil) |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 2 | Vehicle has exceeded gear oil service interval |
| Signs of Wear & Troubleshooting - Section 1 - Header | Signs of wear for gear oil include but are not limited to: |
| Viscosity | 75W90 |
| Weight (lb) | 1.94 |
| Width (in) | 2 |
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