GRI tires will now incorporate the DOT code emboss on its side walls.
If you are selecting brake fluid for a vehicle, first look at the cap for specifications. This video is sponsored by Advics.
Brake hoses are the most government-regulated components on a vehicle. Anyone making brake assemblies must be registered with the Department of Transportation (DOT). All aftermarket hose, fittings and complete hoses must conform to FMVSS 106 and SAE J1401. These tests are demanding and often exceed what a vehicle will see in the real world.
All DOT 3, 4 and 5.1 brake fluids are compatible with each other and with all systems. All polyethylene glycol-based fluids will not harm healthy rubber parts. Also, the additive packages will not damage or distort any rubber parts. Even an older rubber part with a high concentration of natural rubber will not be damaged by new DOT rated brake fluids.