5.0 / 5.0
(7) 7 total reviews
Limited-slip gear oil for high-load differentials, axles, and manual transmissions in a wide range of vehicles. Exceeds the Eaton E500 spec for 500,000 mile drain intervals.
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Description
TRIAX Synergy Gear Max full synthetic gear lubricants are extreme performance extreme pressure, API GL-5 Limited Slip gear oils designed for a very wide range of applications and gear systems. They are built with a top tier proprietary additive system and select base oils, delivering exceptional performance, gear protection, in high load, high torque applications. Triax Synergy Gear Max oils are extremely stable even in very high stress conditions, without loss of viscosity and facilitate extreme long drain intervals of 750,000 miles for highway trucks and 500,000 miles for other vehicles.
Applications include hypoid gear systems, manual transmissions, axles and differentials in a very wide range of applications, both with and without limited slip requirements in heavy duty trucking, construction, mining, buses, passenger cars, racing, agriculture.
- Prevents micro pitting, fatigue wear and normal scuffing under high load, high temperature conditions.
- Dramatically improves gear, bearings and transmission life.
- Extremely long drain intervals and provides significant savings from down time and fluid costs
- Stays in grade in both very high and very low temperature operations
- Compatible with most mineral gear oils. Allows easy changeover from mineral to synthetic.
- Also provides a wide range of compatibility with transmission seals, soft metals and ferrous and non-ferrous transmission / gear box components
- Proven protection far beyond spec requirements, delivers excellent EP (extreme pressure) and AW (anti-wear) performance in a wide range of LS and NON-LS gear systems, with hypoid and other gears
LIMITED SLIP READY - No need for additional aftermarket additives.
Viscosity Grades: 75W90, 75W140
Specifications
- API GL-5 Limited Slip
- API MT-1
- Mack GO-J Plus
- Mercedes Benz 235.8
- U.S. Steel 224
- ZF TE-ML 05B/16F/21B
See data sheet for full specs.

Most people don't worry with changing the diff fluid but i do. I don't want to worry about my diff wearing out that's why i choose Triax Gear oil. Still runs silent even after over 200K.
This is the best gear oil out there , great price and works great . I use this in both my cars rear axle
Stays very clean and you don’t need modifiers
High quality gear oil
Used it in the rear axle of a 2017 Ram 1500 with limited slip. No friction modifier needed. Limited slip still works. Quality product.
I bought this TRIAX 75w140 Full Synthetic for my brand new 6 foot rotary cutter for my tractor. I wanted to start out with the best gear oil possible and I choose TRIAX for that reason. I even made a video on it for my YouTube channel, The Diamond H.
Only fluid I’ll put in my truck, getting ready to change out all my fluids on a newer truck I just purchased and triax is my first maintenance item.
I use this product in my 2020 F250 M275 rear axle, and it is still very clean at 40k drop.
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Manufactured in the USA