Mechanics

DEX-COOL

1997 Pontiac Transport • FWD • 118,000 miles

I have 1 gal of prestone dex-cool extended life antifreeze/coolant do I have to add water to it
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Msamgab
December 15, 2011.



Did you read the container for instructions?

Tiny
Fixitmr
Dec 15, 2011.
How much is 50% and 30% of water, it donst say how water to add

Tiny
Msamgab
Dec 15, 2011.
50% is called half and half. Equal parts of dex and water. 30% is 2/3 dex with 1/3 water. These are ratio's of a quantity. The quantity in your case is 1 gallon. So 1 gallon dex with 1 gallon water 50/50 or 1 gallon dex with gallon water. 30% would I gallon dex with 1/2 gallon water.

Tiny
Fixitmr
Dec 15, 2011.