I just drained the radiator and block in my 305... i flushed it out with the hose, and got most of the gunk out (i think). I want to refill it with a 50/50 mix, but I don't know the capacity. I'm not sure if the number I found (17 quarts?) is just for the radiator or for the entire cooling system. I Know that i have to fill it up to the top and then keep topping it off to bleed the system, but if I dont know the total capacity, i can't mix the antifreeze in for the right ratio before filling. I might be incredibly over thinking this... but I'm new so go easy on me Thanks for your help, any instructions would be greatly appreciated.

 

im pretty sure just fill it and keep topping it off should do the trick does it realy matter how much it holds ?

 

I did the same thing to my V6 car after I changed the heater core. It was around 4 jugs of 50/50.

 

Just fill the radiator up to the top and leave the radiator cap off,start the car up and let it warm up.Once it's up to temperature the thermostat will open and let it flow through the system.

When you see the level in the radiator drop,just keep adding fluid until the fluid level inside the radiator stops lowering and all the air bubbles are out of the system. let the heat run too inside the car so it flows through everything.

It's not hard just take your time.

 

thanks everyone, appreciate the help. And to answer matj's question, it doesnt matter how much it holds, but if I knew that, it would be easier to get a 50 - 50 ratio because I would know how much antifreeze to mix in.

 

umm if u mix it 50/50 before hand u wouldnt have that prob?

 

I was going to say something like that.
Use a milk jug or something and fill it half way coolant then water. Then you know you have a 50/50.

 

Thanks, thats basically what i ended up doing. A little more time involved, but worked out. Appreciate the help!

 

Why didn't you just buy the 50 50 premixed

 

its more expensive when u figure out the mixture

 

are you using distilled water to mix it with