All this talk of "manufacturers recommendations" got me curious, so I checked out the owners manual under Engine Coolant:
"A 50/50 mixture of clean, drinkable water and DEX-COOL coolant will :
- Give freezing protection down to -34F
- Give boiling protection up to 265F
- Protect against rust and corrosion.
- Help keep the proper engine temperature.
- Let the warning lights and gauges work as they should."
a few pages later:
"If coolant is visible but the coolant level isn't at or above the FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant..."
Sounds like I'm covered either way, as GM doesn't sound that particular as to what kind of water is used.
But... oh no! I might have turned this thread into a DEX-COOL hate fest as well!
I'll be in my bomb shelter if anybody needs me...
"A 50/50 mixture of clean, drinkable water and DEX-COOL coolant will :
- Give freezing protection down to -34F
- Give boiling protection up to 265F
- Protect against rust and corrosion.
- Help keep the proper engine temperature.
- Let the warning lights and gauges work as they should."
a few pages later:
"If coolant is visible but the coolant level isn't at or above the FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant..."
Sounds like I'm covered either way, as GM doesn't sound that particular as to what kind of water is used.
But... oh no! I might have turned this thread into a DEX-COOL hate fest as well!
I'll be in my bomb shelter if anybody needs me...