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my understanding is that ALL EX's motors, be they gas or diesel, have roller cam followers. If that is correct, you shouldnt want ANY "mouse milk" additives in either your fuel or oil.
The cam followers are bathed in oil delivered by the oil pump and never come in contact with the fuel in any manner.
In what way do you say that a fuel detergent additive affects them?
I just got my X last week and was wanting to run something through the fuel system. Is Techron the best cleaner? I used to run SeaFoam through my other vehicles and it worked OK.
I was in a local AutoZone this evening; my mirror fell off the windshield and I had to get some mirror glue to put back on... any how, I looked and here in NC the Techron was not on sale, but the Shell VTec (I think?) was.