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I recently acquired a '17 BMW 540i with the B58 motor. After doing some research I think I've pretty much settled on using Shell Helix Ultra 5W-40. I live in Phoenix so I'm planning on running this year round. With the specs this oil meets and the higher TBN, should I have any concerns about...

Looking for recommendations for Honda 2.0T (K20) - 2018 Accord Sport. Driving is primarily highway with some city mixed in. I'm not hard on it. I live in Phoenix, so it sees high summer temps as well. I know the 1.5T has (or had) oil dilution issues, but haven't heard that applies to the 2.0T...

We just purchased a 2017 X5 with the N55 motor. The car has 29,000 miles on it. Next oil change is due in 8000 miles according to the maintenance indicator, so it was recently changed. The car has been dealer maintained, so guessing it's currently using 0W-30 (unless I'm missing something)...