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115K miles right now

well i noticed that with synthetic in the 4.6L ford engine right now, it comes out a lot cleaner after an oil change, but i have noticed that it blows a little more blue smoke than it used to before the synth.. many say its the valve seals in the engine, but would they be helped if i switched...

would it help to switch to non synthetic at all after i use auto rx?

thanks for the early reply...i heard that auto rx does help a lot...but wouldnt it just clean the seals and valves...wont this make it worst? what do i know... you have a website i can visit?

well as many might know, my older 97 ford t-bird witha 4.6 gets a little smoky when i accelerate when i sit at a light for a while...never see any blue smoke under hard acceleration or any other kinda driving unless when it sits there for a while idling at a light...i dont know a lot about these...