I have Buick with the 3800 engine that had dexcool in it. I had a water pump done. When done they filled with O'reilly yellow antifreeze universal that has turned a bit reddish as I guess the heater core retained some dexcool.
My questions
1) can I use ZEREX G-05 to top off
2) should I flush and use it
3) should I go back to dexcool
4) should I add O'reilly yellow antifreeze universal to top off
My questions
1) can I use ZEREX G-05 to top off
2) should I flush and use it
3) should I go back to dexcool
4) should I add O'reilly yellow antifreeze universal to top off