I don't trust any of the advertisements personally, fuel injectors cleaner, high mileage oil, etc. Good oil is good oil. I'm at 170k miles on mine, so mine falls into High mileage. Another buddy of mine has 350k+ miles on his jetta 5w-30 mobile 1 gold run in that thing for the past five years Atleast.
2003 GMC Sierra SLT 2500HD CC/SB