Changing to Royal Purple ?
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Originally Posted by 545OH' post='798600' date='Feb 21 2009, 09:14 PM
I am wondering if anyone has changed to royal purple engine oil. I decided to buy my car at my lease end and now am thinking more long-term. Is it also better to change oil more often than bmw recomends which is a really long time? Is there anyone who has heard or tried royal purple. I have seen some good things about this stuff.
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