Coolant rust - The 1947 - Present Chevrolet & GMC Truck Message Board Network

davepl · 12-24-2015, 03:56 PM

Had to drain the coolant to change over to tower clamps, but noticed it was quite brown (and started out green, as Prestone).

This is odd because:
- Engine was hot tanked
- Engine was baked
- New radiator
- New heater core
- All new hoses

So the only old part I can think of is the water pump!

It's always had a coolant mix in it, never plain water. Where the heck could I get enough rust to color the coolant that rusty brown color? Or does it take very little to cause that?

12-24-2015, 03:56 PM	#1
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,334	Coolant rust Had to drain the coolant to change over to tower clamps, but noticed it was quite brown (and started out green, as Prestone). This is odd because: - Engine was hot tanked - Engine was baked - New radiator - New heater core - All new hoses So the only old part I can think of is the water pump! It's always had a coolant mix in it, never plain water. Where the heck could I get enough rust to color the coolant that rusty brown color? Or does it take very little to cause that? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.