The Ford Barn - View Single Post - Anyone used Irontite block sealer in a Flathead?

Mr.C. · 01-15-2021, 01:43 PM

Irontite comes well recommended, but...

The instructions say that after a certain time of running the coolant should be drained and left to dry out for twelve hours before re-filling with water etc.

Fine, except the Ford Flathead V8 doesn't have a block drain, so allowing the insides to dry out would take a heck of a lot longer than twelve hours!

Has anyone had success with skipping this step? i.e draining, flushing with water, draining, leaving it to 'dry', and flushing again?

01-15-2021, 01:43 PM	#1
Mr.C. Junior Member Join Date: May 2020 Posts: 4	Anyone used Irontite block sealer in a Flathead? Irontite comes well recommended, but... The instructions say that after a certain time of running the coolant should be drained and left to dry out for twelve hours before re-filling with water etc. Fine, except the Ford Flathead V8 doesn't have a block drain, so allowing the insides to dry out would take a heck of a lot longer than twelve hours! Has anyone had success with skipping this step? i.e draining, flushing with water, draining, leaving it to 'dry', and flushing again?