--- product_id: 624071792 title: "React Performance DOT 4 1L" brand: "castrol" price: "£32.33" currency: GBP in_stock: true reviews_count: 5 category: "Castrol" url: https://www.desertcart.co.uk/products/624071792-react-performance-dot-4-1l store_origin: GB region: Great Britain --- # 245°C high wet boiling point ISO 4925 Class 6 certified Low viscosity at subzero temps React Performance DOT 4 1L **Brand:** castrol **Price:** £32.33 **Availability:** ✅ In Stock ## Summary > 🚗💨 Brake fluid that keeps you cool under pressure and hot on performance! ## Quick Answers - **What is this?** React Performance DOT 4 1L by castrol - **How much does it cost?** £32.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/624071792-react-performance-dot-4-1l) ## 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 - • **OEM-Approved Compatibility:** Meets ISO 4925 Class 6 and works seamlessly with DOT 3, 4 & 5.1 fluids - • **Unrivaled Thermal Stability:** Handles extreme heat up to 245°C to prevent brake fade under pressure - • **Synthetic Formula for Longevity:** Advanced glycol ether and borate ester blend ensures lasting brake system protection - • **Optimized for Modern Safety Tech:** Enhances ABS and ESP system responsiveness for precise control - • **Superior Cold-Weather Performance:** Maintains fluidity and responsiveness even in freezing conditions ## Overview Castrol React Performance DOT 4 is a premium synthetic brake fluid engineered for superior thermal and low-temperature performance. Certified to ISO 4925 Class 6, it supports modern vehicle safety systems like ABS and ESP, ensuring reliable braking in all conditions. Its advanced formula offers high wet boiling points and low viscosity, making it a trusted choice for professional-grade vehicle maintenance. ## Description Castrol React DOT 4 Low Temp is a high performing synthetic brake fluid based on glycol ethers and borate esters. Review: Decent quality product. - This stuff is great for controlling brake fade, especially when compared to old fluids & I find it lasts really well. One of my first jobs I do when I buy a new car or help someone out with servicing theirs is to update brake fluid. Review: Recommended - Excellent Quality as always, amazing value ## Features - Suspected of damaging fertility or the unborn child. - Castrol React DOT 4 Low Temp brake fluid meets the new ISO 4925 Class 6 specification recommend by many vehicle manufacturers. Castrol React DOT 4 Low Temp is fully compatible with other fluids meeting FMVSS 116 DOT 3, DOT 4 and DOT 5.1. However, in order to maintain the superior performance characteristics of this fluid, avoid mixing with other brake fluid products. - Advantages Castrol React DOT 4 Low Temp brake fluid not only exhibits excellent high temperature performance but is also formulated to provide improved low temperature performance. It has been specifically designed to have: Lower viscosity at low temperatures - High wet boiling point - Recommended by a number of vehicle manufacturers to assist with the speed and control of their electronic stability control systems (ESP and ABS). - Hydraulic pressure generated in the brake system is used to apply the wheel brakes. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CDQH4LLV | | Best Sellers Rank | 3,049 in Automotive ( See Top 100 in Automotive ) 297 in Vehicle Oils & Fluids | | Brand Name | Castrol | | Container Type | Bottle | | Country of Origin | United Kingdom | | Customer Reviews | 4.6 4.6 out of 5 stars (40) | | Item Form | Liquid | | Item Type Name | Castrol React Performance DOT 4 | | Item Weight | 300 Grams | | Liquid Volume | 1 Litres | | Manufacturer | Castrol | | Material | Synthetic | | Product Warranty | please see Castrol website | | Recommended Uses For Product | Automotive | | Specific Uses For Product | Vehicle Brake Systems | | Unit Count | 1.0 count | | Upper Temperature Rating | 245 Degrees Celsius | | Viscosity | Lower than other brake fluids at low temperatures | ## Product Details - **Brand:** Castrol - **Item weight:** 300 Grams - **Liquid volume:** 1 Litres - **Material:** Synthetic - **Package information:** Bottle ## Images ![React Performance DOT 4 1L - Image 1](https://m.media-amazon.com/images/I/71KWpHCLeIL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Decent quality product. *by P***M on 2 June 2025* This stuff is great for controlling brake fade, especially when compared to old fluids & I find it lasts really well. One of my first jobs I do when I buy a new car or help someone out with servicing theirs is to update brake fluid. ### ⭐⭐⭐⭐⭐ Recommended *by K***R on 4 May 2025* Excellent Quality as always, amazing value ### ⭐⭐⭐⭐⭐ Ok *by L***E on 19 April 2025* Ok ## Frequently Bought Together - Castrol React Performance DOT 4 1L - STP Heavy Duty Car Brake Cleaner 500 ml, Cleans Brakes without Disassembly, Reduces Brake Noises, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK - MOLYSLIP - COPASLIP | High Temperature Copper Anti-Seize Grease | Withstands Extreme Temperature (Up To 1100°C) | Protects Against Galling, Seizure Rust and Corrosion | Ideal for Cars/Vehicles | 100g --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/624071792-react-performance-dot-4-1l](https://www.desertcart.co.uk/products/624071792-react-performance-dot-4-1l) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-26*