DOT 3 & 4 interchange. DOT 5 will not interchange with either.

you will have to COMPLETELY flush your brake system out before switching to DOT5


1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi
2020 RAM 1500
[img]https://i.imgur.com/v9yezP9.jpg[/img]