---
product_id: 48189249
title: "Red Line D4 ATF (Dex/Merc) 32 oz (946ml) Quart Bottle for Automatic Transmissions, Passenger Cars & Light Trucks"
brand: "red line"
price: "€ 57.68"
currency: EUR
in_stock: true
reviews_count: 7
category: "Red Line"
url: https://www.desertcart.ie/products/48189249-red-line-d4-atf-dex-merc-32-oz-946ml-quart
store_origin: IE
region: Ireland
---

# Extended drain intervals High thermal stability Low-temp shiftability Red Line D4 ATF (Dex/Merc) 32 oz (946ml) Quart Bottle for Automatic Transmissions, Passenger Cars & Light Trucks

**Brand:** red line
**Price:** € 57.68
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smarter, not harder — Red Line D4 ATF keeps your ride smooth and ready.

## Quick Answers

- **What is this?** Red Line D4 ATF (Dex/Merc) 32 oz (946ml) Quart Bottle for Automatic Transmissions, Passenger Cars & Light Trucks by red line
- **How much does it cost?** € 57.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/48189249-red-line-d4-atf-dex-merc-32-oz-946ml-quart)

## Best For

- red line enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Top-rated by enthusiasts and OEM spec-matched for peace of mind.
- • **Cold-Start Champion:** 5W viscosity ensures lightning-fast shifts even in freezing temps ❄️.
- • **Long-Lasting Formula:** Extended drain intervals mean fewer fluid changes and more time on the road ⏳.
- • **Smooth Shifts, Always:** Balanced friction for consistent, silky gear changes every time.
- • **Heat-Resistant Performance:** Runs hot without varnish buildup—protects your transmission under pressure 🔥.

## Overview

Red Line D4 ATF is a synthetic automatic transmission fluid engineered for superior low-temperature shiftability and exceptional thermal stability. Its low 5W viscosity enables quick, smooth gear changes in cold conditions, while its robust formula prevents varnish and clutch wear at high temperatures. Designed for passenger cars and light trucks, it supports extended drain intervals, reducing maintenance frequency. Trusted by professionals and rated 4.8 stars by over 500 users, this fluid meets OEM specs and enhances transmission longevity.

## Description

Red Line Synthetic Automatic Transmission Fluids are designed to provide excellent low-temperature shiftability and improved thermal stability over petroleum ATFs. These fluids provide a much lower viscosity at cold temperatures for quicker shifting and their balanced frictional characteristics provide smooth and consistent shifts over extended drain intervals. The superior stability compared to petroleum ATFs also allow high-temperature operation without varnishing valves and clutches, which leads to transmission failure.

Review: Good - Matches 955 Cayenne transfer case fluid specs.
Review: Four Stars - Great for my Hurth gearboxes on my boat.

## Features

- Harmful to aquatic life with long lasting effects.
- Red Line Oil

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000CPI5XM |
| Best Sellers Rank | 230,856 in Automotive ( See Top 100 in Automotive ) 373 in Gear Oils |
| Brand | Red Line |
| Customer Reviews | 4.8 4.8 out of 5 stars (546) |
| Date First Available | 7 Sept. 2007 |
| Item Weight | 771 g |
| Item model number | RED30504 |
| Manufacturer | Red Line Oil |
| Manufacturer part number | 30504 |
| OEM Part Number | 30504 |
| Product Dimensions | 10.16 x 9.91 x 21.84 cm; 771.11 g |
| Viscosity | 5w |

## Product Details

- **Brand:** Red Line
- **Item weight:** 1.7 Pounds
- **Liquid volume:** 0.95 Litres
- **Material:** Synthetic
- **Package information:** Bottle

## Images

![Red Line D4 ATF (Dex/Merc) 32 oz (946ml) Quart Bottle for Automatic Transmissions, Passenger Cars & Light Trucks - Image 1](https://m.media-amazon.com/images/I/61ttowW8L7L.jpg)

## Questions & Answers

**Q: Is this d4 atf fluid work on 2002 lexus ls430**
A: yes

**Q: Is it better to use Lubegard 63010 Platinum Universal ATF Protectant with this ATF?**
A: Lubegard additives are safe with all fluids except for CVT Transmissions, and Ford type F. Their products are very good. LG Platinum is designed to meet mfg approval specs for ATF without approval codes on a PROPER base ATF fluid. I just did an Auto trans service on a 2000 Jetta TDi.(supposedly sealed and need no service for life) Yeah right.  I changed the Trans filter, and pan gasket, and Side Cover gasket. I refilled with 3.5L Ravenol full synth ATF it's already fully compliant ATF with VW specs and still added LG Platinum just to keep things inside good. (seals, valves moving etc.)  Tranny has 287K on it, expect to get at least 150K or more out of it now.

**Q: Is this compatable with a Honda Accord 2000 LX Automatic Transmission?**
A: That transmission should call for ATF Z1. Red Line recommends for this spec, so you shouldn't have a problem with using D4 in your Accord.Here's a link: http://www.redlineoil.com/product.aspx?pid=51&pcid=9

**Q: Can anyone say if I can use this on  a mazda 3 2010 model automatic transmission with a manuel overdrive?**
A: I'm using  Red Line D4 in my 2011 3S 2.5L since 2011 no issues even in low 15 degree temps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by G***Y on 26 September 2020*

Matches 955 Cayenne transfer case fluid specs.

### ⭐⭐⭐⭐ Four Stars
*by F***L on 17 February 2017*

Great for my Hurth gearboxes on my boat.

### ⭐⭐⭐⭐⭐ Review
*by L***P on 6 August 2025*

Très bon produit, j'utilise ce produit exclusivement pour ma Corvette C6 depuis longtemps !

## Frequently Bought Together

- Red Line 30504 D4 Synthetic Automatic Transmission Fluid (ATF) - 1 Quart
- Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart
- Slippery Pete - Fluid Pump for Standard Quart Bottles - 8cc per Pump Stroke and 3rd Hand Adapter, Transfer Gear Oil, Transmission and Differential Fluid (28mm)

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**Shop now:** [https://www.desertcart.ie/products/48189249-red-line-d4-atf-dex-merc-32-oz-946ml-quart](https://www.desertcart.ie/products/48189249-red-line-d4-atf-dex-merc-32-oz-946ml-quart)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-13*