Royal Purple 01300 Max Gear 75W-90 High Performance Synthetic Automotive Gear Oil, 1 Quart (32 Ounces)

Royal Purple 01300 Max Gear 75W-90 High Performance Synthetic Automotive Gear Oil, 1 Quart (32 Ounces)

Q: Always use luca 80w-90 in ford ranger 2.3l, 7.5" rear diff. wanted to try this. any issues with it being a 75w vs 80w? is this better than lucas?

I use the royal purple 75w-90 in my RAM 2500 differential. My differential is made by American Axle Manufacturing and I talked with one of their mechanical engineers who said the viscosity requirement is determined by several criteria with ambient and operating temperature being big determinants. I live in a warm climate so he said I could use a heavier weight oil. With that knowledge I don't believe there is a big enough difference between the 75 and 80 other the better lubricity at lower ambient and operating temperature. He did recommend amsoil but said the royal purple is just as good.

Q: I have graphite/ composite synchronizers in my transmission , will they be damaged by the use of anything other than the "Castrol syntorque" recom

I've had the best experience with Redline MT90 in manual transmissions. RP was not working well with syncros (grinding gears when shifting).

Q: I know that the product description says that it is not for use in wet clutch systems, but will it be okay for use in motorcycle final gear (shaft)

Will be fine as a motorcycle final gear oil. I use this product in two BMW motorcycles, a BMW R1150RT and a R1200S, as a final drive oil and also as the transmission oil.

Product ID: 257795634

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Details

Material
Synthetic
Brand
Royal Purple
Package information
Bottle
Liquid volume
1 Quarts
Item weight
1 Pounds

🔥Proprietary Snarled additive tech

⚙️75W-90 synthetic viscosity

🛡️API GL-5/GL-4 heavy-duty protection

Frequently Bought Together

Royal Purple 01300 Max Gear 75W-90 High Performance Synthetic Automotive Gear Oil , 1 Quart (32 Ounces)

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Description

⚙️ Gear up with Royal Purple – where power meets precision.

HEAVY LOAD READY - Engineered for trucks, RVs, marine, and high-stress differentials.
COOLER RUNNING GEARS - Reduce heat buildup to extend gear life and prevent costly overhauls.
ALL IN ONE PROTECTION - No extra additives needed—formulated with hypoid friction modifiers for clutch and cone differentials.
SNARLED ADDITIVE TECHNOLOGY - Experience unmatched smoothness and quieter gear operation.
ULTRA TOUGH SYNTHETIC FORMULA - Maximize gear power and longevity with advanced synthetic oils.

Royal Purple 01300 Max Gear 75W-90 is a high-performance synthetic gear oil designed to protect and enhance heavily loaded automotive and marine gears. Featuring proprietary Snarled additive technology and meeting API GL-5/GL-4 standards, it ensures smoother, quieter, and cooler gear operation without the need for additional additives.

Specifications

Manufacturer	Royal Purple
Brand	Royal Purple
Model	1300
Product Dimensions	7.62 x 5.08 x 2.54 cm; 453.59 g
Item model number	ROY01300
Manufacturer Part Number	1300
OEM Part Number	01300
Item Weight	454 g
Viscosity	75W-90

Have a Question? See What Others Asked

Always use luca 80w-90 in ford ranger 2.3l, 7.5" rear diff. wanted to try this. any issues with it being a 75w vs 80w? is this better than lucas?

I have graphite/ composite synchronizers in my transmission , will they be damaged by the use of anything other than the "Castrol syntorque" recom

I know that the product description says that it is not for use in wet clutch systems, but will it be okay for use in motorcycle final gear (shaft)

Will it work in a bmw x-3 transfer case, the manufacturer calls for their fluid # TF0870?

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