Thread: 2003 head issue
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Old 06-11-2017, 01:09 AM   #5
rickpilgrim
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Join Date: Apr 2011
Location: Wausau, WI
Posts: 591
Re: 2003 head issue

Very interesting as I also have the 706 castec heads on our 04 suburban and my coolant loss is very minor(gal every 4-6 months) and we change oil every 22-2500 mi to keep the "white paste" out of the valve covers. I'll have to try the ac/delco coolant tabs and see what happens.
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