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That stuff is snake oil. I don't use it, never will.
You could eat off the valve trian in my 603, the cam, lifter's, and tops of the valves look brand new after 254k miles.
Thats on straight Mobil 1 for the past 25k miles, no idea what the PO used.
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2006 CL500
1969 280SE
2023 Ram 1500
2026 Genesis GV70
2007 Tiara 3200
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