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Discussion Starter #1
in a 06 6.0 is there any kind of antifreeze that can be used besides the motorcraft gold yellow that is only available form the dealer in my area that is clossed this weekend. and wont hurt the engine untill the next required coolant change.
 

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Discussion Starter #3
do you have to drain it completely or can i just drain the radiator and fill it back up with a 50 50 mix of it and distilled water without trying to get it all out of the engine? is there anything else i dont really have a napa auto very close by
 

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"resident smarty pants"
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Here is a procedure I copied from another Forum:

1) Buy 4 gallons of Ford Premium Gold coolant at dealer (or Zerex G05)

2) Buy 15 gallons of distilled water at local grocery store.

3) Drop lower radiator hose until empty.

4) Reconnect hose and add distilled water to degas bottle until full.

5) Drive truck until temp guage goes to normal and thermostat opens.

6) Repeat steps #3 through #5 no less than 4 or 5 times (depends on distilled water amaount used) - I can't remember?

7) You now have 100% distilled water in your system.

8) Drop lower hose 1 last time, drain and reconnect.

9) Look in manual for your system capacity and for a 50/50% refill of coolant just add the coolant straight into your degas bottle up to the amount that equals a 50/50% concentration. Our refill capacity is 27.5 quarts.

10) Start motor and add distilled water to bring system level to the MIN mark on degas bottle.

11) Drive truck around to open thermostat and let cool 1 or twice to purge any air. May need to add more distilled water (don't add coolant)... but when done you have flushed your entire system and have a perfect 50/50% concentration of coolant and distilled water!!!!

The dealer only uses tap water and so does most other places... distilled is best in order to keep the minerals out of your system.
 

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Discussion Starter #6
thanks i just finnished doing all of this and have another question.

how hot should one of these engines run just driving down the hwy at 65 mph on a 97 deg day not pulling a load, cruise control on, with stock program, 3.73 gears, 33" tires, s&b cai, 5" tb exhaust, a/c on. just curious mine has been running around 206 deg f here lately which is why i changed out the coolant ( well it was due for a change any way at 105k mi) but it seems like the engines running kinda hot for just cruising down the hwy empty.
 

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"resident smarty pants"
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STOCK READINGS
...................................Normal......Severe Service......Alarm
Tranny Temp................150 - 195......195 - 200............220
Coolant Temp...............190 - 195.......195 - 210...........215
Fuel Press......................60 - 50.........50 - 45..............45
EGT - pre Turbo............650 - 1200....1200 - 1250.........1300
EGT - post Turbo...............700...............900..............1000
Boost..............................0 - 26..........27 - 28.............28
Oil Temp.......................200 - 220.......220 - 235..........235
Oil Press............................12................na.................7
HPOP Discharge Press
Coolant system Press..........10-12..............na...............16
 

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Also, as an FYI .............

Engine temperature is not the only parameter that the PCM monitors to determine cooling fan operation. This is the reason that you will see some variation in engine temperature as it correlates to fan operation. The operation/description of the FSS (Fan Speed Sensor) from the PC/ED manual has a fairly good explanation as to how the system "thinks". This is not your traditional engine hits temp X and the fan clutch locks up. The fan speed sensor is a Hall-Effect sensor integral to the vistronic drive fan (VDF). The powertrain control module (PCM) will monitor the sensor input and control the VDF speed based upon engine coolant temperature (ECT), transmission fluid temperature (TFT) and intake air temperature (IAT) requirements. When an increase in fan speed for vehicle cooling is requested, the PCM will monitor the FSS signal and output the required pulse width modulated (PWM) signal to a fluid port valve within the VDF.

Some say fan kicks on at 210, some say 215, others say 220. The variability is due to the explanation above. Engine begins to defuel at 221 deg. The thermostat begins to open at about 190*F to 195*F and is not fully open until about 215*F to 219*F.
 

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Discussion Starter #9
thanks for the info. the other day when i noticed the hotter than normal engine coolant temp it was 97 deg outside running on the hwy empty around 65 mph. the engine coolant temp was around 206, trans temp 155, engine oil temp 196, pyro after turbo 560 , boost at around 6psi. think it is about normal?
i have noticed the engine fan kicks on high speed when coolant temp gets to around 196 deg which i guess is about right for it on my f150 it does it at 198 deg.
 
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