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i have heard about putting in an anti foaming agent when you change your oil because air gets into the system and can cause air bubbles and eventually cause foam in your system. what are your thoughts?
Back with my old gasser I was using SeaFoam before changes, but since buying my 04 350 SD I use only Motorcraft and now Rotella oil, but I also use only Motorcraft filters. I don't have any problems.
