Compression Ignition Addict
Join Date: Apr 2007
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Read up on HEUI injectors and why the 6.0L has stiction issues. IMO it isn't so much engine lubrication as it is injector longevity that requires the need for a quality synthetic oil.
You didn't want oil feedback, but oh well.
oil change interval is a max of 7500 miles (most go 5000).
fuel change is a max of 15,000 miles, but it highly depends on fuel quality.
Transmission fluid changes at least every 30k miles and change the external filter each time.
Motorcraft filters only (International and Racor are the same as the Motorcraft).
Low fuel pressure is not good for injectors. It would be wise to add on a gauge for it.
An electronic scan tool for reading live engine parameters is pretty necessary for these vehicles. If you haven't already, I would watch the oil and coolant temps (fully warmed up and driving 65-70 mph) and determine if you have a healthy oil cooler (no more than a 15 degree differential).
Lastly - read up on coolant choices.
Last edited by bismic; 05-07-2017 at 05:48 PM.