Hello Paul, I drive a 2004 VW Touareg, which requires DOT3 brake fluid. When I recently visited a nearby petrol station, they only had DOT4 brake fluid available. What is the difference between ...

DOT 2 brake fluid is mineral based and should not be mixed with any other DOT rated fluid. DOT 3 and DOT 4 are glycol ether based. You can mix DOT 4 with DOT 3 brake fluid, but never add DOT 3 to DOT ...

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