interesting that Rev-X "works" when the main component is Highly refined mineral oil (C15-C50) https://www.revxoil.com/images/productliterature/103.pdf
3rd party ASTM testing illustrated here:
I know it's been years, but just curious if there were any further hot shot secret updates? Also, think they ship directly to Canada now, since you last posted (and lots of new products and formula improvements!)
Sounds like FICM, especially if you're getting specific code. Could be fuel or fuel-quality issue? I like to use this as reference: http://www.hotshotsecret.com/diagnose/ford-pickup/60-powerstroke-issues/
I was going to say, definitely sounds like a notorious 6.0 stiction issue. I'd start in the diesel additive category on both the oil and fuel side: https://www.amazon.com/gp/bestsellers/automotive/15718841/ref=pd_zg_hrsr_auto_1_5_last
Is it auto? I would try something like this product before tearing into anything mechanical: https://www.amazon.com/Hot-Shots-Secret-HSSTSE32Z-Transmission/dp/B00W939XOA/ref=lp_15983985011_1_4?srs=15983985011&ie=UTF8&qid=1489111869&sr=8-4
Been doing some research and looking for testimonials on the Hot Shot's Secret Stiction Eliminator; haven't seen much posted about it within the last year or 2 and would love to hear any recent experiences??