Decided to pick up some anti-freeze today. My S-10 had started making a gurgling sound through the heater core with moderate to hard acceleration when I start out. I figured the Dex-Cool was starting to clump again and thought it would be time to back flush the heater core again.
Back flushed it, but I think the gurgle was because the coolant level was down. Will now have to watch the recovery tank and keep things topped off.
Anyway, what I ended up getting was Prestone extended life anti-freeze. Bottle claims it to be compatible with any color, any brand, for any vehicle, extended life anti-freeze. I had intended to buy the Dex-Cool, but the PX did not have it.
Paid $12.99 for the gallon, then on the way home, at Wal-Mart it was $9.00.
They had the 50/50 mix for $8.00.
Best part is, right now (until Feb 28 -09) Prestone has a $5/gal (2 gallon/address limit) "cash back" on extended life concentrate, and $3 on the 50/50