hydraulic clutch

[makser]

Can you put dot 4 hydraulic clutch /brake fluid in a reservoir that specifies dot 3 in a 2002 rt10 ? Its harder to get dot 3 now .The dot 4 container i have has all the writing in german so i cant tell wether its compatible ? The chap at the car shop says going up a number is fine but going down a number isnt !

[makser]

Oh right .Why is that ? Do you think that is necessary ?

[makser]

Thanks .Like many supercars i think it pays to ask before you do anything or else dire consequences may ensue .I like the use of the word - "postulate" to ! I dont know really what it means but once i do i will maybe use it now and again ! Cheers .