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Message: [QUOTE="Powerstroke Man 6.4, post: 1079030, member: 4573"] What kinds of oils you folks use for your truck or trucks? I recently got two free 5 gallons buckets of CAT DEO 15W40 CI4 oil and I have running that oil since. I usually go out and buy Mobil Delvac 15W40 CJ4 or Valvoline Premium Blue 15W40 CJ4 but I thought hey I got 10 gallons of Cat DEO CI4 for free why not try it out. Thoughts on the Cat DEO CI4 15W40 Engine seems to run quieter with this oil then the other oils I have used in the past. Less BB Cooler oil temp Bad The exhaust is really strong. I have read that since CI4 oil is a older oil and is meant to be ran in older engines it will cause more soot build up in the DPF if your truck is not deleted. Any other cons that CI4 oil has on a 2007+ EPA engine? I usually change my oil and filers 5-7K since I tow 10K+ almost everyday What kinds of oil (type brand viscosity) do you buy? How much miles do you put on that certain oil before you do a oil change and fuel filters? Fuel filters 5-7K since where I live diesel contains a lot of water and the fuel is always dirty. loud injectors etc [IMG][URL=http://s327.photobucket.com/user/F-250Powerstroke/media/dirtyfuelfilter1_zpsab382374.jpg.html][IMG]http://i327.photobucket.com/albums/k462/F-250Powerstroke/dirtyfuelfilter1_zpsab382374.jpg[/IMG][/URL][/IMG] [IMG][URL=http://s327.photobucket.com/user/F-250Powerstroke/media/dirtyfuelbowl1_zpsda7c8975.jpg.html][IMG]http://i327.photobucket.com/albums/k462/F-250Powerstroke/dirtyfuelbowl1_zpsda7c8975.jpg[/IMG][/URL][/IMG] [IMG][URL=http://s327.photobucket.com/user/F-250Powerstroke/media/rsz_dirt_fuel_filter_2_zps0750c44d.png.html][IMG]http://i327.photobucket.com/albums/k462/F-250Powerstroke/rsz_dirt_fuel_filter_2_zps0750c44d.png[/IMG][/URL][/IMG] Keep in mind the filters only have 5-7K on them I always run a additive (diesel kleen silver bottle, ford PM-22-A) What fuel additives do you folks run or recommend? Motorcraft oil filter and fuel filters Thanks in advance [/QUOTE]