Ok new question, anyone know what kind of oil audi uses when they do the free oil changes?
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Oh, go ahead and be surprised. Because it depends upon the dealer.
Some may still use petroleum oil. One here uses Castrol Syntec 10W40. Another uses a synthetic that Audi supplies to them via the Audi supply wearhouse. Brand not known to me. In any event different dealers use different oil or synthetic depending upon the business practice of the individual dealer.
What Audi puts in at the factory and what dealers use in the USA for specified service is determined by the dealers themselves. I would expect the determination is largely based on cost to the dealer vs. what the dealer is reimbursed by Audi for the service. That logically would seem normal business practice.
Remember the TT owner may be the auto enthusiast. The Audi dealer is more likely to be wanting to make a profit.
What Audi puts in at the factory and what dealers use in the USA for specified service is determined by the dealers themselves. I would expect the determination is largely based on cost to the dealer vs. what the dealer is reimbursed by Audi for the service. That logically would seem normal business practice.
Remember the TT owner may be the auto enthusiast. The Audi dealer is more likely to be wanting to make a profit.
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Mine used Castrol GTX the first (AND ONLY) time that they changed my oil.>>>>>
It took them like an hour and a half for real, and they slapped a complementary Castrol GTX sticker on my left engine cover. I only use mobil 1 now. Castrol is not a true synthetic.
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Castrol Syntec is a Group III basestock...
Group III is hydrocracked petroleum.
It's only "synthetic" because an oil industry marketing board decided that it could be called that when Mobil (which uses predominantly a Group IV PAO basestock in Mobil 1) challenged Castol's calling it a synthetic.
Group III oils are good, better then the older Group II petroleum basestocks, but they cost considerably less than a real PAO synthetic. Castrol's price doesn't reflect that, so they're simply using the "synthetic" label to pocket more profit.
It's only "synthetic" because an oil industry marketing board decided that it could be called that when Mobil (which uses predominantly a Group IV PAO basestock in Mobil 1) challenged Castol's calling it a synthetic.
Group III oils are good, better then the older Group II petroleum basestocks, but they cost considerably less than a real PAO synthetic. Castrol's price doesn't reflect that, so they're simply using the "synthetic" label to pocket more profit.