Help / advice please

My master cylinder is leaking, do i go for

Master cylinder repair kit

Larger master cylinder (mineral oil) (where can i get one of these?)

or convert to dot 4 (what are the problems with doing this?)

Cheers

Mine was leaking and I bought a new seal kit, but when I stripped it down and cleaned everything I couldn't find anything wrong. Don't know if a bit of grit was lodged under the lip of the seal, but I put the original seals back in and its been fine. Just a thought before you go spending lots of cash.

Can't help you with the larger master cylinder as I have no experience, but can't see any benefit in making the retrograde step back to using brake fluid.

Thanks for the reply, i have had it apart and cleaned it but it still leaks