Dot.4 Fluid in Dot.3?

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Feb 17, 2020 | 08:23 PM

#11

shipo

Senior Member

Joined: Nov 2008

Posts: 2,726

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From: southern New Hampshire

Quote:

Originally Posted by Arkainzeye

RE-READ the info provided.. never did it say dot 3 & 4 are NOT compatible . It says they are NOT compatible with 5.. thats always been a “thing” for years now.. especially in the motorcycle world

Reread and quoted.

Quote:

Originally Posted by Arkainzeye

DOT3 and DOT 4 cannot be mixed with DOT5 fluid. They are incompatible and if mixed, brake failure may occur. Moreover, there are serious compatibility issues when using DOT5 in a system that was engineered to use DOT3 or DOT4. Also, users should take care not to mix DOT3 and DOT4 fluids as there may be brake system compatibility issues. Always consult your owners manual and use the type of fluid specified for your vehicle