Those steps do not drain out the coolant in the heater core.

So you now have a mix of old and new coolant, and they may not mix very well.

And a 160 degree t-stat in cold wheather is going to noticeably hurt gas mileage.


Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST Pre98 Zetec - Some Mods