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Re: [GMCnet] Radiator Antifreeze Additive and Anode [message #257391 is a reply to message #257364] Thu, 31 July 2014 23:35 Go to previous messageGo to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
Senior Member
Mickey,

Thank them for their advice and tell them you want them to use plain old Prestone (or some other brand name) anti freeze and
DISTILLED water.

According to the GMC Maintenance Manual the cooling system takes 21 quarts. If the whole system is empty it will probably take more;
lets say an extra 4 quarts for a total of 25. For a 50/50 mix you will need four gallon jugs of Prestone and four gallon jugs of
distilled water.

DO NOT BUY 50/50 PREMIXED ANTI FREEZE YOU'RE PAYING FOR 50% WATER!

Regards,
Rob M.
The Pedantic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428



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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
 
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