Rygi

Doing research on which is the best coolant to run, however much of the info I'm finding is at least a few years old so thought I'd seek more up to date info. Current color of it suggests previous owner used the Motorcraft gold and I do not want to use that based on what I'm reading. I just want something that will not fail in any way and will last a long time, and hopefully something that is easily available as if like to pick some up this weekend. Thanks in advance.

djfllmn

iTrader: (1)

motorcraft gold. That is what needs to be in the truck. The only reason why you are seeing what you are is because it was never changed regularly

racin4ds

iTrader: (1)

MC Gold works but needs flushed OFTEN and was never the correct coolant in the first place, IH (built the engines for ford) wanted non-silicate ELC coolant in these motors with a coolant filter. FORD decided to save a dollar and delete the cooler and use their NON-diesel G05 coolant, this was 90% of the problem with the 6.0...

acdii

Yes be careful of what coolant you use. Best thing to do, get a coolant filter and run IH coolant with the additives. Regular antifreeze can create deposits and cause cavitation which ruins a block. The IH coolant helps prevent this and lasts longer.

http://www.knowyourparts.com/technic...t-maintenance/