coolant drain plug?

[xpress]

i want to drain the water and refill with new coolant and water mix.

is it a good idea to use the coolant drain plug or avoid it due to it maybe being siezed due to age?

how else can i drain the block and rad? can i unclip the bottom rad hose?

and then there's bleeding the system .. any tips?!

:S

[T'Onion]

petrol engine ? then its between the pushrod tubes

or like you say undo one of the rad tubes

[Ian Hulley]

I'd leave the head drain plugs alone ... just inviting something else to leak in the future if you ask me ... the rad hose will suffice.

Ian

[xpress]

thanks to both replies.