Royal Purple
Royal Purple Max Gear SAE 80W-90 Synthetic Gear Oil - 05302
SKU: R022 05302
Description
Part #: 05302
Max Gear is a high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. Max Gear virtually eliminates both gear and bearing wear even under severe squeeze film conditions caused by extremely high loads, sudden shock loads or low RPMs. Slippery, synthetic molecules not only reduce wear and friction but significantly increase Max Gear's cold weather fluidity and lubricity, making it the ideal choice for vehicles operating in cold climates. Gears run smoother, quieter, cooler and longer without overhauls. It is noncorrosive to both ferrous and nonferrous metals.
Royal Purple Max Gear SAE 80W-90 Synthetic Gear Oil
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Royal Purple |
| Part Number | R022 05302 |
Videos
Which fluid to use for Toyota Diffs,Transfer Case and Manual transmissions
CHEAP Differential Gear Oil is better than the Expensive Name Brand... Here's Why!
AMSOIL gear oil mobil 1 valvoline royal purple best gear oil and differential oil
Do Not Use Synthetic Engine Oil
![7 Best 75w90 Gear Oils in 2026 [Reviews & Buying Guide]](https://img.youtube.com/vi/jT9aPT4uIv4/hqdefault.jpg)
7 Best 75w90 Gear Oils in 2026 [Reviews & Buying Guide]
![Gear Oil Vs Engine Oil: What’s The Difference? [2025]](https://img.youtube.com/vi/h_EGDH5S_1M/hqdefault.jpg)
Gear Oil Vs Engine Oil: What’s The Difference? [2025]
Lucas Synthetic Gear Oil vs AMSOIL 75W-90 Cold Flow Test
AMSOIL vs Schaeffer's 75W-90 Supreme Gear Lube Cold Flow Test
75w-140 vs. 75w-90 Gear Oil | How To Read Gear Oil Viscosity Numbers
Lucas diff fluid review
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy