Originally Posted By: tempnexus
Originally Posted By: kschachn
As everyone has said, there is no additive that will make an incorrect oil "good", and the correct oil specified by the manufacturer needs no additive. The proper oil will not be improved by an additive and there isn't one that makes it more better for the turbo.
It seems as though you like to discuss essentially the same thing multiple times.
What the manufacturer uses is based on who wins the lowest bid it doesn't mean that it's the best oil for the engine (unless you are naive enough to think otherwise). Sure any synthetic oil will protect the car for the extended warranty period of 75k miles ([censored] even dollar store conventional will do that) but I am not looking for the 75k miles protection.
I think you are confusing dealer or factory fill (both purchased at a price point) with an OEM performance spec, which simply dictates a minimum level of performance. There have been instances where the dealer doesn't even use a product that meets the OEM performance spec for the vehicle (Volkswagen) in the past and I wouldn't be surprised if that's still common. The poster you've quoted is telling you to use an approved lubricant, that is, one that has passed the OEM's performance regiment, if there is one, not oil from the dealer. Though oil sourced from the dealer could in fact be approved, particularly if we are talking a name-brand lubricant off the shelf not what they have in their bulk tanks.
As for your posit regarding longevity, that seems like a rather spurious statement and is contradicted by a number of anecdotes in this very thread, where multiple 200,000 mile examples have been mentioned as having reached that milestone using that very process you slag as being inadequate.