Description
Comparison points and tradeoffs
When comparing RR363 Heavy Duty Brake Fluid – 4 Pack with other Brake Fluids options, use this source-backed detail as the primary discriminator: Formulated to be a replacement to Castol RR363, which is no longer produced.
Use this second fact to evaluate the tradeoff: Category: Oils & Fluids / Brake Fluids. A third point to compare across alternatives is: GRM RR363 is produced using only the highest quality ingredients and is blended with special additives designed to enhance lubricity while reducing noise and corrosion.
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
(4-Pack) GRM RR363 Heavy Duty Brake Fluid Brake Fluid for Rolls-Royce and Bentley vehicles specifying RR363 type fluid. GRM RR363 is produced using only the highest quality ingredients and is blended with special additives designed to enhance lubricity while reducing noise and corrosion. Formulated to be a replacement to Castol RR363, which is no longer produced. Will not degrade rubber components. Meets manufacture specifications. Ships (4) – 1 liter bottles
Source product highlights
About this item
- 4 – Pack
- For Rolls-Royce and Bentley vehicles specifing RR363 Hydraulic Fluid4 – 1 liter Bottles.
- Rolls-Royce Brake Fluid
- Bentley Brake Fluid
- Provides excellent corrosion protection.




Steven Mastroianni –
It’s the right stuff for Rolls Royce
Customer –
Product as advertised