About 25 years ago, I cared for a '54 Ford for my buddy during the winter.

He called me and advised me that the car had no antifreeze and it was getting cold.

I could not get the radiator drain open and did not want to take the bottom hose off.

I took a turkey baster and removed as much water as I could - the top of the radiator was pretty big.

I poured antifreeze in slowly until the radiator was full again, and removed the water again - it had almost no color.

I did this process one more time and had added enough antifreeze to do the job.

I then ran the car to mix things up.

I do not think that antifreeze remains separated after the motor is run up to temperature.
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'96 855R,'64 PV544 driver, '67 P1800 basket case, '72 Yamaha Rd400, '68 Honda 350-4, '12 XC70, the first 5 are mine, heh, heh, 525,000 miles put on 10 bricks James A Sousa