I just read in my shop manual that both DOT 4 and 5.1 can both be used in my GT. I didn't know that. Does anyone use DOT 4? I've always used Motorex 5.1 just because.
DOT 5.1 does not have a higher boiling point then quality DOT 4. Motul and Castrol have DOT 4 fluids with much higher boiling points both wet and dry then the recommended Motrex.
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