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      08-30-2021, 11:17 AM   #10
BMWRNMD
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Drives: 21 M340i
Join Date: Aug 2021
Location: East Coast

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Quote:
Originally Posted by v_ckash623 View Post
Oh no, I'm not using the dealership changes at all. Doing my own changes with 5w30 from here on out. I believe there's folks on here that do swap viscosities as needed from time to time. Some will use a heavier oil for hard tracking then swap down for day to day, or seasonal fluctuations.
I would definitely do that too. However this whole warranty thing makes me reluctant. So how does it work in your case and everyone else who is still under warranty and changes oil with the 5W-30. If something serious goes wrong with the engine and the dealer sees that the 0W-20 wasn't used, the warranty is gone.

So I guess in this case (as with most mods) it's a "do it at your own risk" type of thing right? (even though technically there should be no issues)
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