Quote:
Originally Posted by chris719
No, I understand perfectly how it works. My S54 engine came filled with Castrol TWS 10W-60. You could do a UOA and tell. BMW did not fill it with a secret Castrol product and sell TWS only to retail.
There is zero chance that BMW or Porsche has paid Pentosin to develop an exclusive lifetime fill DCT fluid that is NOT the same fluid that they sell to dealers which is also an exclusive lifetime fill DCT fluid. It would be the height of stupidity.
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Assumption is mother of all screwups!
Only thing you can say is: there is zero chance.
S54 was a niche product and 10W60 was a band aid. It was a uniqe issue.
Every component requires its own solution.
You can believe whatever you want, but your first fill in DCT will be Group III product that is compromise between limited oxidation and performance.
Aftermarket products, INCLUDING Pentosin that is sold as. PENTOSIN is different story.
You are constantly comparing apples and oranges.
Now, whether Refline is better than Motul that is better than Pentosin, or other way around, is in the eye of beholder.