Coolent for C5
Thread Starter
Burning Brakes
Joined: Mar 2008
Posts: 1,170
Likes: 0
From: Obama says I'm a bitter white guy clinging to my guns and religon and he's right
Coolent for C5
I just reinstalled my antifreeze tank last night and placed the coolant that I was able to capture when I diconnected the hoses. Note: I pinched the S hose to the block with vice grips after it was diconnected. I lost some coolant, yet I still need to add coolant to the tank.
Question: Do you have to bleed the lines and if so, how?
Also, does anybody have any recomendations on which coolant that I need to use, or just replace it with the manufactures recommendations?
Where is the best place to purchase the coolant?
Question: Do you have to bleed the lines and if so, how?
Also, does anybody have any recomendations on which coolant that I need to use, or just replace it with the manufactures recommendations?
Where is the best place to purchase the coolant?
Melting Slicks
Joined: Nov 2008
Posts: 3,146
Likes: 203
From: Edmonton Alberta, Canada
Coolant replacement
When adding or replacing coolant in ANY GM vehicle....always replace with Dex cool the manufacture insists on. Your cooling system with corrode with ANY other coolant. Dont mess with this one!!
Le Mans Master
Joined: Sep 2003
Posts: 8,847
Likes: 795
From: Longview Texas
If I understand your note correctly, you are reusing all the old coolant you could capture.
I would not risk putting old coolant back in. In fact, it would be a good time to drain the rest of the coolant and refresh the whole system.
I would not risk putting old coolant back in. In fact, it would be a good time to drain the rest of the coolant and refresh the whole system.
CF Community Team
Joined: Oct 2004
Posts: 19,354
Likes: 5,240
From: Cape Cod, Mass.
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Dex-Cool mixed with Distilled water 50/50.
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
There are no "bleed" vents on a C5. The shop manual says to replace cap and alternately rev engine to 3,000 rpm until temperature gets to 210 F. Then add coolant as needed. Do this 3 times, adding coolant to 1/2 inch above cold mark.
