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Discussion Starter · #1 ·
I’ve been hearing rumors, but let me back up. I recently got a 2016 428i x drive gran coupe, and wanted to do a tune up. Since it’s a 2016 n20 with the updated timing chain i wasn’t worried about that, I was worried about the GM oil in it. Sticker on the hood says 0w20, but ive been hearing from other owners about 5w40 or even bmw’s twin scroll turbo 5w30. So here’s the question: should I stick with the 0w20 or go thicker?
 
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