coolant refill amount? 2003 F250 6.0-85k miles

[jerrybs]

Drained 16 quarts from radiator drain pet ****. The refill level in the manual is 27.5 quarts. Where is the rest of the coolant? I flushed twice with tap water and twice with distilled water. Refilled with 16 quarts 50 50 mix of ford gold, and distilled water. Should i have drained the block by removing the plugs? I let the engine get hot during each flush. Pretty sure I flushed most of the old coolant out. The reason i did this was to clean the egr valve.
A little dirty but not bad, reinstalled with new rings amd gasket.
Where is the rest of the coolant?

Will a ODB II reader give a deta T across the oil cooler? If not can i measure with my fluke pipe clamp transducers i use for refrigeration? I know less than 15 is good, more than 15 there is a problem.

Where is the rest of the coolant?

[jesilvas]

You can not get all the coolant out. Heater core, heater lines, block, cylinder jackets, everywhere.
Also, if you wanted to wind up with a 50/50 mix, you shoulda refilled with half the total capacity in concentrated coolant, and the rest with distilled water. Right now you have probably a 25/75 coolant/water ratio.

[Dave]

Rest is in the block, lines and heater core heater hoses.

7 gallons total roughly

[Duncan's KR]

Originally Posted by jesilvas

You can not get all the coolant out. Heater core, heater lines, block, cylinder jackets, everywhere.
Also, if you wanted to wind up with a 50/50 mix, you shoulda refilled with half the total capacity in concentrated coolant, and the rest with distilled water. Right now you have probably a 25/75 coolant/water ratio.

This is not an entirely true statement. You can use a high volume low pressure blower(aka leave blower) to get most if not all out. check out http://www.evanscooling.com/assets/p...er-04Apr11.pdf the coolant may be different but the theory is sound.

[PGreenSVT]

jerrybs, you should have read one of the several coolant flush writeups found here as you went about this all wrong. It takes at least 6-7 flushes to get down below 1% remaining of whatever was in the system to start, old coolant, tap water, etc. To do an effective flush job you really have to flush the living bejesus out of it. It is most economical to do this part with tap water. Then follow with at leats 24 gallons of tap water. Then add 3.5 gallons of concentrated coolant and top off as required with distilled water. This returns you to a 50/50 mix. I suggest you start over and do it right.

[jerrybs]

pgreensvt thanks for the advice. I actually did read all of the posts and then some!
I flushed a total of 5 times, 3 with tap and 2 with distilled water The 3rd time with tap water the radiator drain plug was removed and a garden hose inserted in the degasser tank for 20 minutes. (heater on high) This project took a few hours with all of the flushing! Pretty sure most of the original coolant is gone. What do you think about adding a coolant filter? I like the Sinister product. Thanks everyone for your help. Jerry

[rmsmx13]

My flush took a total of about 12-14 hours without removing the thermostat and draining the driver side plug only. When you use tap water it is imperative that you flush with approx 24 gallon of distilled to get all the tap water outta the system. Without removing the plugs in the block I would suggest using even more atleast 3-6 gallon more.

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