Dot 4 Brake Fluid Vs. Dot 3

What is the diff. Between Dot 3 and Dot. 4. I know it says use only Dot 4 But would using Dot 3 Hurt anything? :thumbsup:

DOT 4 has a higher boiling point....and AFAIK the dealer is the only place you'll find DOT3 anymore. Can you say WAY too expensive?

They are interchangeable, unless you have an unopened can of 3 go buy a can of 4.

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