While removing AC, found this

[Jean]

Two questions:

1) once t-stat is removed how should the hoses be connected or which hose should I block ?

2) what's needed to drain the block, any special tools to remove the block drain caps ?

Thanks.

[SykoBMW]

Two questions:

1) once t-stat is removed how should the hoses be connected or which hose should I block ?

2) what's needed to drain the block, any special tools to remove the block drain caps ?

Thanks.

Very strong tweezers, the bolt is .87mm in diamter.

[ptownTSI]

I ran well water in an old jeep for 2 months and it was still clear when i drained it. thats disgusting.

[AndrewBird]

The rule of thumb for filling a radiator is if it is safe to drink, it is safe to put in your car. Only water that is highly saturated with minerals will corrode the inside of your engine.

[Jean]

Well, I am sure PO didn't care that much about it