coolant question

[ThirdCoastStroker]

Just bought an 08 350 a week ago and I noticed that it is low on coolant like to where I cannot even see it in the reservoir I have added 1-1/2 gallons of coolant still cannot see it in the reservoir should I be pitting distilled. Water in their as well I am using peak 50/50?

[dereku]

I would take it too a dealer if it still has a warranty if it is that low. Had to have went somewhere ya know.

But just keep using 50 50 or buy the 100% stuff and mix it yourself to save cash

[ThirdCoastStroker]

Kool thanks I know in my old truck I used straight 50/50 but I wasn't sure about these new trucks

[Jim Truett]

What kind of Peak antifreeze are you using? If it does not have additives in it to prevent cavitation and pitting you might be asking for trouble. Zerex G05 and the OEM Ford Gold are generally the only two coolants recommended for the 6.4.

[truckinguy]

08's had the low coolant issues..The more you drive around with it the bigger the problem will get.
I had lot's of them until this past spring. If you put the wrong antifreeze in it flush it out and put the right stuff in before you go to the dealer. You still must have 100K warranty? If not go any way because the testing won't cost much to find out.
Depends on what work was done before as to what needs to be done now. I had 2 radiators,venturi tee,thermostats,egr coolers,water pump work done before it ran right. Newer trucks like the 2010 had these in place from factory.