---
product_id: 535899099
title: "TRIAX Trans-Zero 20W-50 Full Synthetic Hydrostatic Transmission Oil | for Zero-Turn, Riding, and Stand-On Lawn Mowers | Unrivaled Year-Round Protection (1 Gallon)"
brand: "triax"
price: "฿6495"
currency: THB
in_stock: true
reviews_count: 13
category: "Triax"
url: https://www.desertcart.co.th/products/535899099-triax-trans-zero-20w-50-full-synthetic-hydrostatic-transmission-oil
store_origin: TH
region: Thailand
---

# -50°F pour point & heat stability 20W-50 high-viscosity grade 3× longer fluid life TRIAX Trans-Zero 20W-50 Full Synthetic Hydrostatic Transmission Oil | for Zero-Turn, Riding, and Stand-On Lawn Mowers | Unrivaled Year-Round Protection (1 Gallon)

**Brand:** triax
**Price:** ฿6495
**Availability:** ✅ In Stock

## Summary

> 🛠️ Power your mower with the ultimate transmission oil—because your turf deserves the best!

## Quick Answers

- **What is this?** TRIAX Trans-Zero 20W-50 Full Synthetic Hydrostatic Transmission Oil | for Zero-Turn, Riding, and Stand-On Lawn Mowers | Unrivaled Year-Round Protection (1 Gallon) by triax
- **How much does it cost?** ฿6495 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/535899099-triax-trans-zero-20w-50-full-synthetic-hydrostatic-transmission-oil)

## Best For

- triax enthusiasts

## Why This Product

- Trusted triax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extended Fluid Life:** Oxidation-resistant and corrosion-proof for up to 3× longer service intervals, perfect for commercial use.
- • **All-Season Performance:** From freezing cold starts to scorching heat, ensures smooth hydrostatic operation year-round.
- • **Noise & Performance Upgrade:** Proven to reduce hydrostatic noise and improve mower responsiveness—join the satisfied pros.
- • **Universal OEM Compatibility:** Seamlessly fits top zero-turn and stand-on mower brands for hassle-free maintenance.
- • **Advanced Anti-Wear Protection:** High-zinc formula guards gears against scuffing and glazing under heavy loads.

## Overview

TRIAX Trans-Zero 20W-50 is a premium full synthetic hydrostatic transmission oil engineered for zero-turn, riding, and stand-on mowers. It delivers unmatched all-season stability with a -50°F pour point, superior anti-wear zinc chemistry, and extends fluid life up to three times longer than OEM oils. Compatible with leading mower brands, it reduces noise and enhances drivetrain performance, making it the go-to choice for professionals and enthusiasts seeking reliable, long-lasting protection.

## Description

Product description SPECIFICATIONS & APPLICATIONS For use in hydrostatic transmissions in zero-turn, stand-on, and riding mowers requiring a high-viscosity transmission fluid, either 20W-50 or 15W-50. Explore TRIAX Synthetic Automatic Transmission Fluids TRIAX Trans Zero TRIAX 689 ATF TRIAX DCT ATF TRIAX XT ATF TRIAX CVT ATF TRIAX GLOBAL ATF TRIAX ULV ATF

Review: Major improvement in operation. - Well worth the cost. I have a Cub Cadet commercial zero turn and the Hydrogear drive units have been noisy since new. I have changed the fluid and filters several times and used different brands of fluid. This TRIAX fluid is amazing, I changed to it yesterday morning and then mowed my 1 acre yard and the difference in noise level and smoothness was just astounding. I am sold on it forever now. My son is going to order some for both of his ZT's because he is having the same issues with noise and sluggish operation after getting hot. I will be looking into other products made by TRIAX as well.
Review: Saved my Toro TimeWaster Hydro - This hydro trans fluid is the best! It quieted my Toro Timecutter with the cheap ass Hydrogear EZT 2000 hydros. Toro advertises them as "non serviceable" but they are and there's YouTube videos showing how and it's easy to do. DO NOT LISTEN TO TORO or you'll be replacing them. I ruined my left hand hydro and replaced it with a used one. Put this fluid in it and it's super quiet so I did the right side hydro that's still original. It's also quieter than it's ever been! I'll use this TRIAX from now on and plan to do it annually because I have a large lawn and live in South Texas where we mow practically year round. My other advice? Don't buy any zero turn that states they have "non serviceable" hydros. But if you do, service them and use TRIAX for the win!!! This stuff costs less than Toro Fluid and works 1000 times better!!

## Features

- Broad OEM Compatibility: Compatible with leading zero-turn and stand-on mower brands, including Ariens, Bad Boy, Cub Cadet, Dixie Chopper, EverRide, Exmark, Ferris, Gravely, Husqvarna, Hustler, John Deere, SCAG, Snapper Pro, Toro, Walker, and Wright.
- Direct OEM Fluid Replacement: Replaces all OEM hydrostatic transmission and drivetrain fluids that require a 20W-50 or higher-viscosity grade, simplifying inventory and servicing across mixed mower fleets.
- True All-Season Stability: Delivers reliable performance from cold starts to extreme heat with a -50°F pour point, outstanding high-temperature stability, virtually zero deposits, and exceptional resistance to shear.
- High-Zinc Wear Protection: Elevated zinc anti-wear chemistry prevents gear scuffing and glazing, maintaining mower speed and ensuring flawless hydrostatic operation in tall grass, uneven terrain, and heavy loads.
- Extended Service Life: Superior oxidation resistance, high film strength, and corrosion protection prevent metal-to-metal contact and extend fluid life up to 3× longer than OEM oils, making it ideal for high-hour commercial use and long storage intervals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C74Y4CK1 |
| Best Sellers Rank | #14,617 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #338 in Mower Parts & Accessories |
| Brand | Triax |
| Brand Name | Triax |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 1,108 Reviews |
| Item Form | Oil |
| Liquid Volume | 3.79 Liters |
| Manufacturer | Triax Lubricants LLC |
| Material | Metal |
| Model Number | HYD20W50 |
| Number of Items | 1 |
| Package Information | Bottle |
| Part Number | HYD20W50 |
| Recommended Uses For Product | Mechanical |
| SAE J300 Viscosity Grade | 20W-50 |
| Specific Uses For Product | Zero Turn Mower Hydrostatic Transmissions |
| UPC | 850023978073 |
| Unit Count | 128.0 Count |
| Viscosity | 20W50 |
| Viscosity Level | Medium to High |

## Product Details

- **Brand:** Triax
- **Liquid Volume:** 3.79 Liters
- **Package Information:** Drum
- **Vehicle Service Type:** Lawn Mower
- **Viscosity:** 20W50

## Images

![TRIAX Trans-Zero 20W-50 Full Synthetic Hydrostatic Transmission Oil | for Zero-Turn, Riding, and Stand-On Lawn Mowers | Unrivaled Year-Round Protection (1 Gallon) - Image 1](https://m.media-amazon.com/images/I/71jRGI45mbL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Major improvement in operation.
*by S***C on May 11, 2026*

Well worth the cost. I have a Cub Cadet commercial zero turn and the Hydrogear drive units have been noisy since new. I have changed the fluid and filters several times and used different brands of fluid. This TRIAX fluid is amazing, I changed to it yesterday morning and then mowed my 1 acre yard and the difference in noise level and smoothness was just astounding. I am sold on it forever now. My son is going to order some for both of his ZT's because he is having the same issues with noise and sluggish operation after getting hot. I will be looking into other products made by TRIAX as well.

### ⭐⭐⭐⭐⭐ Saved my Toro TimeWaster Hydro
*by D***N on January 3, 2026*

This hydro trans fluid is the best! It quieted my Toro Timecutter with the cheap ass Hydrogear EZT 2000 hydros. Toro advertises them as "non serviceable" but they are and there's YouTube videos showing how and it's easy to do. DO NOT LISTEN TO TORO or you'll be replacing them. I ruined my left hand hydro and replaced it with a used one. Put this fluid in it and it's super quiet so I did the right side hydro that's still original. It's also quieter than it's ever been! I'll use this TRIAX from now on and plan to do it annually because I have a large lawn and live in South Texas where we mow practically year round. My other advice? Don't buy any zero turn that states they have "non serviceable" hydros. But if you do, service them and use TRIAX for the win!!! This stuff costs less than Toro Fluid and works 1000 times better!!

### ⭐⭐⭐⭐⭐ Excellent Synthetic Oil – Perfect for My Cub Cadet LTX1045
*by M***I on August 27, 2025*

I used this TRIAX 20W-50 in the hydrostatic transmission of my Cub Cadet LTX1045, and it works flawlessly. The mower runs smoother, quieter, and cooler compared to conventional oil. Shifts are consistent, and I can tell the transmission is protected even under heavy mowing conditions. This oil is high-quality full synthetic, designed specifically for zero-turn and garden tractors, so it gives peace of mind that the hydro system will last. A gallon is enough for service with extra left over, making it a solid value. If you want long-lasting protection and smoother performance for hydrostatic mowers, this is the right choice.

## Frequently Bought Together

- TRIAX Trans Zero 20W-50 Full Synthetic Hydro-Static Transmission Oil for Zero-Turn Mowers (1 Gallon)
- Hydro Gear 52114 Pack of 2 Spin-On Oil Filters

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-14*