Differential oil is a crucial component for maintaining vehicle health—especially in heavy-duty or commercial applications. Below, we explain what differential oil is, how to change it, why it matters, and how to choose the best product for your equipment.
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What is differential oil in car?
Differential or gear oil is a lubricant designed for the gears in a vehicle’s differential. The differential is the mechanism that allows the wheels of a vehicle to rotate at different speeds, particularly when turning.
This is essential for maintaining control and preventing wear on the drivetrain. Differential oil reduces friction and heat in this critical system, ensuring smooth operation and long-lasting performance.
Differential oil change interval
To keep your vehicle operating efficiently, it is essential to adhere to recommended oil change intervals. These intervals vary based on the type of vehicle, driving conditions, and the oil quality used.
Does differential oil need to be changed?
Yes, same as you change engine oil, the oil in the differential must be changed periodically to maintain optimal performance. Over time, exposure to heat, pressure, and contaminants can degrade the oil’s lubricating properties. Neglecting to replace old oil can lead to increased friction, overheating, and even costly damage to the differential gears.
How often to change differential oil?
The oil in the differential should generally be changed every 30,000 to 60,000 miles for most passenger vehicles. However, heavy-duty vehicles or those operating under severe conditions—such as towing or frequent off-road driving—may require more frequent changes. Always consult your vehicle’s manual or a trusted mechanic for specific recommendations.
How much differential oil do I need?
The amount of oil required in the differential depends on the size and type of the vehicle. For most cars, the differential may hold around 1 to 2 quarts of oil. Heavy-duty trucks or commercial vehicles may require more. Always verify the exact capacity in your vehicle’s service manual to avoid underfilling or overfilling.
Rear differential oil change interval
Rear differentials in standard vehicles typically require an oil change every 30,000 to 50,000 miles. For vehicles under heavy workloads, like trucks and SUVs used for towing, this interval may decrease. Routine maintenance helps protect the rear axle from wear and tear.
Truck differential oil change interval
Trucks, especially those used in commercial applications, demand robust maintenance schedules. Differential oil in trucks should be changed every 25,000 to 50,000 miles, depending on usage intensity. Regular inspections can help identify any signs of wear or contamination that might require more immediate attention.
Differential oil types
Oils for the differential comes in various types, typically classified by viscosity and additives. The most common classifications include:
- Conventional Gear Oil. Basic protection for standard vehicles.
- Synthetic Gear Oil. Offers superior temperature stability and performance under extreme conditions.
- Limited Slip Differential Oil. Specifically formulated for limited-slip differentials, ensuring proper operation and reducing chatter.
- Heavy-Duty Gear Oil. Designed for vehicles under high stress, such as commercial trucks and construction equipment.
Best differential oil products
Timing your differential oil change correctly is essential, but selecting the right product is just as critical. At American Petroleum, we recommend our DEXRON® LS (Limited Slip) 75W-90 gear oil—a high-performance synthetic lubricant tailored for extreme-pressure automotive axles.
Why Choose DEXRON® LS 75W-90?
- Extended Protection. Formulated to provide long-lasting anti-wear protection, extending the life of your differential gears.
- Reduced Maintenance Costs. Minimizes downtime and repair expenses by ensuring optimal performance.
- Meets Industry Standards. Complies with API GL-5 grade and General Motors requirements (9986290/GMW16445).
- Versatile Application. Designed for use in various vehicles, including General Motors
Choosing DEXRON® LS 75W-90 gear oil is an investment in your vehicle’s performance and longevity. Protect your equipment with a product that delivers excellence, reliability, and peace of mind.
Ready to optimize your vehicle’s performance with the right differential oil? Reach out to American Petroleum at info@americanpetroleumpr.com or (787) 794-1985.
Let us help you maintain your equipment’s health and efficiency—because your business deserves the best.