Need some help. 1970 cadillac eldorado

[Rtlapanco]

Im in need of some information. Im going to be doing a radiator flush on my 1970 cadillac eldorado but have no owners manual to find the radiator capacity. Can any one help me its a 500 ci 8.2l any info helps thank you.

Rtlapanco

[Bob Hoffmann CLC#96]

It's 21.8 quarts. Watch for an email.
Thanks, Bob

[TJ Hopland]

Times like this you wish parts stores had shopping carts.   3/6 jugs is hard to carry.   I remember my first time in my Eldo.  I only had 4 gallons which was hardly enough to see it in the radiator.   Had to ride my bicycle to the parts store for more. 

[76eldo]

Two gallons of full strength antifreeze and the rest water.  That's all you need.

Drain out the old crap, keep the radiator petcock open and run a garden hose into the radiator filler opening until it all runs clear.  Then let it all drain out, close the petcock and add your new coolant.  Run the heater on high heat and you will be flushing the heater core out too.

Brian

["Cadillac Kid" Greg Surfas 15364]

Roberto,
When you refill your system it will take a while for all the air to be forced out.  I would suggest starting the motor and running it with the cap off until it is warm and coolant is seen circulating. fill the radiator to the neck and install the cap.  Drive the car a few miles and WHEN IT COOLS OFF, SAY 6 HOURS remove the cap and fill the radiator.  Then observe the level in the overflow bottle to ,maintain proper coolant levels.  That's how I do it any how.
Greg Surfas