Antifreeze
07-08-2017, 05:03 PM
#1
Racer
Thread Starter
Antifreeze
Hi folks, I'm about to drain my radiator and was wondering what brand antifreeze do you use on your aluminum radiator. I have the stock L-79 motor, I drained it some time ago and forgot the actual brand I used. Just wondering what you guys recommend. I have DEX-COOL running in my Silverado, could I use that? Thanks, Gary
07-08-2017, 05:13 PM
#2
Team Owner
Member Since: Feb 2003
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2015 C2 of Year Finalist
DO NOT USE DEX-COOL. just a 50/50 mix of green and distilled water
07-08-2017, 05:25 PM
#3
Melting Slicks
Like Nowhere Man says, don’t us Dexcool, it will leach the lead out of soldered joints (heater core). The green stuff, like Prestone is OK, but I strongly recommend Zerex G0-5 (yellow or amber), it’s an HOAT coolant, and has a more effective additive package for protection of aluminum radiators.
07-08-2017, 05:34 PM
#4
Xerox GO5???
Prior CF discussion led me to believe ZEREX GO5 antifreeze was the preferred one for aluminum radiators or is that just true for Dewitt's radiators??
07-08-2017, 05:38 PM
#5
Team Owner
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07-08-2017, 05:38 PM
#6
Melting Slicks
07-08-2017, 06:31 PM
#7
Le Mans Master
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2023 C2 of the Year Finalist - Unmodified
St. Jude Donor '20-'21-'22-'23-'24
I use Zerex G-05 in my original L79 with Dewitt's radiator. 50/50 mix with distilled water.
Steve
Steve
07-08-2017, 07:54 PM
#8
Race Director
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The normal green stuff, mixed 50/50 with distilled water. I can't begin to count the catastrophic cooling system failures I've seen over the past 20 years caused by Dexcool. I wouldn't use it as weed killer.
07-08-2017, 08:09 PM
#9
Racer
Thread Starter
