I've tried both Motorcraft fuel conditioners, and both seem to work well in my truck. Strictly subjective, I think the Cetane booster version works better, but doesn't have the emulsifier that I need for the winter. Strangely enough it makes my engine quieter even with 45 cetane fuel - at least that's what my local supplier swears it contains. According to my Ford tech (actually used to work for me), both products contain a cetane booster in them. One is a summer version and the other for winter. His advice is to use it with every fill.

 

I was at 100,961 and a couple months past 5 years, Ford said no on any help. Bought a warranty from the used dealer that I bought the truck from, which I found out excluded the "emission control components". Just gave up $2800 for a truck barely out of one warranty and uncovered by the other, not a happy person right now.

 

I`ve got a 2005 6.0 with 80,000. It`s been from Chicago to Utah twice. Chicago to vegas once. Chicago to Colorado once all pulling trailers. I boosted the motor up 100hp and never has it ever been in the shop. Change the oil every 5,000 and ALWAYS add fuel service with every fill-up.

 

I own a 2003 F250 6.0l it has 94,000 miles on it. It has had the eng replaced 1 time 3 turbos, twice had the heads replaced with newer heads all new engine sensors and wiring harnesses, new oilcooler and several egr coolers all under warranty.when the warranty expired I bypassed the egr cooler got rid of the egr, Installed arp headstuds and next i will replace the turbo with something better aftermarket. I love it when it runs right but when it breaks its a nightmare. I would not wish this engine on my worst enemy and i am a ford tech.

 

I have a 2006 6.0 f350 that hesitates at around 60 to 65 mph anyone have clue what it could be. I was using stanadyne additive and stopped using it for a couple of weeks then I got the hesitation . could it be the fuel at the pump ?