got a 88 camaro 305 toi. hom much antifreeze does it take to fill the radiator. just flushed out my radiator and put in one gallon of prestone prediluted dex cool antifreeze. it says its mixed with water so this means i dont have to add any water?? put in a one gallon bottle that it came in and wasnt enough. how much does it usually take to fill.

 

Do you have A/C ?

 

on my 86 305 tpi with ac, when i flush it put 2 gallons of non dilluted antifreeze in and the rest with water, because there is always a little water left over from flushing. I Think i read somewhere it takes 4 gallons total.

 

yes i have a/c

 

4 gal would be about right

 

If using a 50/50 mix of water and anti-freeze use about 3 3/4 gallons

If using full strength anti-freeze ONLY, use 1 7/8 gallons.

Take care.