Quote:
Originally Posted by northbranchroad
Why is 6,000 mile interval oil change on 5w-30 risky? Isn’t that what bmw recommends to put in these cars?
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Quote:
Originally Posted by SnapCoupe
How so? BMW recommended is somewhere around 8k miles depending on how hard the car is driven. 5W-30 is also factory recommended.
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BMW has always recommended ridiculously long OIC's and many older BMW owners can tell you how that worked out. Now 6000 mile OIC's may be fine with a group 4 or 5 synthetic 40 but a 30 is too thin for a boosted engine IMO long term at that OIC. But there are a lot of factors.
Remember manufacturers don't recommend the best performing oil, they are more focused on meeting emission and mileage standards, etc.