---
product_id: 253544437
title: "03520C Transmax Dex/Merc Atf, 1 Gallon, Automatic, Black"
brand: "castrol"
price: "€ 229.83"
currency: EUR
in_stock: true
url: https://www.desertcart.es/products/253544437-03520c-transmax-dex-merc-atf-1-gallon-automatic-black
store_origin: ES
region: Spain
---

# High-temp oxidation resistance Enhanced friction durability Copper corrosion protection 03520C Transmax Dex/Merc Atf, 1 Gallon, Automatic, Black

**Brand:** castrol
**Price:** € 229.83
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift into the future with Castrol’s ultimate transmission fluid!

## Quick Answers

- **What is this?** 03520C Transmax Dex/Merc Atf, 1 Gallon, Automatic, Black by castrol
- **How much does it cost?** € 229.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/253544437-03520c-transmax-dex-merc-atf-1-gallon-automatic-black)

## Best For

- castrol enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Castrol’s industry-leading formula delivers reliable, long-lasting transmission care.
- • **Corrosion? Not Here.:** Unmatched copper corrosion resistance extends the life of your transmission components.
- • **Built to Withstand Heat:** Superior high-temperature protection keeps your transmission fluid stable and effective.
- • **One Fluid, Many Vehicles:** Broad vehicle compatibility streamlines your workshop inventory and boosts efficiency.
- • **Smooth Shifts, Every Time:** Enhanced friction durability ensures seamless transmission performance under all conditions.

## Overview

Castrol 03520C Transmax Dex/Merc ATF is a premium automatic transmission fluid designed for superior friction durability, high-temperature oxidation resistance, and exceptional copper corrosion protection. Its broad vehicle compatibility makes it an efficient choice for professional workshops and discerning vehicle owners seeking reliable, smooth transmission performance.

## Description

03520C Transmax Dex/Merc Atf, 1 Gallon, Automatic, Black

## Features

- Enhanced friction durability for smooth transmission performance
- Superior high temperature protection to effectively resist oxidation
- Unsurpassed protection against copper corrosion
- Broad scope of vehicle applications improves workshop efficiency and inventory management

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Castrol |
| Brand | Castrol |
| Model | 03520 |
| Product Dimensions | 11.73 x 24.13 x 29.26 cm; 3.39 kg |
| Item model number | 03520 |
| Manufacturer Part Number | 03520 |
| Item Weight | 3.39 Kilograms |
| Viscosity | 4 to 6 cSt at 100°C |

## Product Details

- **Material:** Molybdenum Disulfide Calcium Sulfonate
- **Brand:** Castrol
- **Package information:** Bottle
- **Liquid volume:** 128 Fluid Ounces
- **Recommended uses for product:** Automotive

## Images

![03520C Transmax Dex/Merc Atf, 1 Gallon, Automatic, Black - Image 1](https://m.media-amazon.com/images/I/61aEVtXcf5L.jpg)

## Available Options

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

## Questions & Answers

**Q: Can I use it in a 2000**
A: Honda s2000?  2000 model year Ferrari? 2000 individual mini cooper's? Perhaps the answer isn't in the answer. Perhaps the answer is in the question. As in, why would you touch your vehicle if you can't ask an appropriate question?

**Q: will this work for a 98 jeep cherokee auto 4wd**
A: Here is a link to the list of approved vehicles from Castrol!!!

https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/1BF017717048528380257EDC004D3B0A/$File/BPXE-9FT8RL.pdf

**Q: does this fluid replaces ATF-Z1?**
A: ATF-Z1 is Dex3 with a friction modifier. This will cover that spec. As the trans ages & wears you may be better served by using a higher viscosity fluid such as AMSOIL ATF. If you are doing a drain & refill, the ffirst one is about 44% new fluid replacement. The 3rd. one will take you to 85%. Think diloution rate vs. volume.

**Q: Can this work w/ toyota camry 1999 uses dexron iii? also, can i mix other brand dexron iii (not for hi mileage) w/ this castrol atf for high mileage?**
A: Yes and yes.  However, in my experience, Dexron VI (even in an old worn transmission) will dramatically improve shift quality even in transmissions rated for Dexron III or Toyota Type IV (which is rebranded Dexron IV).

## Frequently Bought Together

- Castrol Transmax DEX/MERC ATF, 1 Gallon, Automatic, Black
- PEAK 50/50 Prediluted Antifreeze and Coolant for All Engine Cooling Systems
- Prestone AS401 DOT 3 Synthetic Brake Fluid - 32 oz.

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**Shop now:** [https://www.desertcart.es/products/253544437-03520c-transmax-dex-merc-atf-1-gallon-automatic-black](https://www.desertcart.es/products/253544437-03520c-transmax-dex-merc-atf-1-gallon-automatic-black)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-24*