1. staplerformilton

    staplerformilton Puttering Along

    so the master cylinder brake fluid reservoir is running low and I don't know what kind of brake fluid my Trabant 600 uses. Anybody know? Don't want to screw it up because I know DOT3 and DOT4 are not interchangeable
  2. TNTrabi

    TNTrabi Lord Trabi Forum Donor

    One difference in them is the boiling point, dot 3 is 293 degrees Fahrenheit and dot 4 is 338 degrees Fahrenheit. I use dot 3 with no ill effects in my trabant. Dot 4 is normally used on vehicles with aluminum calipers and other components due to the heat transfer rate of aluminum. Don't really see the need for that in a Trabi. Also, dot 5 is silicone based so don't use that one for sure.

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