Can you........ (coolant change)

YNOT · May 31st, 2007, 04:30 AM

If you drain the coolant out of the radiator can you leave the drain open and start the car for 30 seconds to get the rest of the coolant out of the block through the radiator drain?

This would be done on a 2003 Chevy Silverado and a 2001 Chevy Cavalier with original coolant.

Horseshoeing · May 31st, 2007, 07:09 AM

You could put water in it and run it and then drain again.

YNOT · May 31st, 2007, 03:47 PM

but then you have water in the block.

Horseshoeing · May 31st, 2007, 06:44 PM

Its all going to mix up and you will never know. You are going to put some water in anyway.

2000Si · May 31st, 2007, 10:48 PM

Originally Posted by YNOT

but then you have water in the block.

coolant is supposed to be a 50/50 mix anyway. throw some water in it, run it, flush it again and know that you will never get 100% of it out.

gills99stang · June 19th, 2007, 10:57 PM

Have a shop power flush it! It's not that expensive. They can flush it several times with water and get ALL the old crap out.

May 31st, 2007, 04:30 AM	#1
YNOT Regular 1989 GT Hatch Join Date: Mar 2007 Posts: 227	Can you........ (coolant change) If you drain the coolant out of the radiator can you leave the drain open and start the car for 30 seconds to get the rest of the coolant out of the block through the radiator drain? This would be done on a 2003 Chevy Silverado and a 2001 Chevy Cavalier with original coolant.

May 31st, 2007, 07:09 AM	#2
Horseshoeing Classic Moderator Join Date: Aug 2005 Location: GA Posts: 4,179	You could put water in it and run it and then drain again. __________________ Classic Mustangs are the best! Get one.

May 31st, 2007, 06:44 PM	#4
Horseshoeing Classic Moderator Join Date: Aug 2005 Location: GA Posts: 4,179	Its all going to mix up and you will never know. You are going to put some water in anyway. __________________ Classic Mustangs are the best! Get one.

June 19th, 2007, 10:57 PM	#6
gills99stang Hardcore Enthusiast 1999 Mustang GT 13.4 @ 100 Join Date: Sep 2006 Location: Virginia Beach, Virginia Posts: 2,729	Have a shop power flush it! It's not that expensive. They can flush it several times with water and get ALL the old crap out. __________________ Brendan '99 Mustang GT [318 rwhp N/A] '04 F150 XLT SuperCab FOR SALE: boost gauge, F150 muffler, vending machines, windshield wiper assembly, z28 corner lights, head unit for Nissan Frontier, 2006 springs, fuel door, Nomad MP3 Player

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May 31st, 2007, 03:47 PM	#3
YNOT Regular 1989 GT Hatch Join Date: Mar 2007 Posts: 227	but then you have water in the block.

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