just ordered the 42 draft designs Water Temp Sender Adaptor and looking to install it this weekend. i have couple of questions:

1). does anyone have step by step instructions with pic on to installing it?
2). is flushing the water coolent necessary? if so any instructions on that?

 

I haven't put mine in yet but a flush is a great idea. That way you know its clean and there is no air in your cooling system which is the objective.

 

Flushing isnt neccessary, but you mine as well becuase unless you drain the system its going to make a mess anyway even if you relieve the pressure. Not to mention the system needs to be burped and free of excessive air.

 

what coolent should i get? and what is the coolent to water ratio?