Quote:
Originally Posted by JimD
I picked up a 5 quart jug of Castrol 0-40 European formula that is LL1 rated at Walmart last time I was there. I used to use Mobil 1 0-40 European but it is now not LL1 rated. I also change every 5K miles which is more than six months for me. I think synthetic is important and a LL1 oil accepted by BMW may be important but frequent oil changes is more important than either. 5K is probably more than sufficient but it's easy to remember.
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While you don't have to use an LL-01 oil, it is a good indicator of the quality of the oil. If an oil meets LL-01, Porsche A40 and Mercedes 229.5, it must be good, since they are all pretty demanding standards. Of course, a long drain requirement is part of the LL-01 standard and if you change your oil out at short intervals, it probably is not such a big deal. If I did not use an LL-01 oil, I would make sure to use a 5W/0W-40 oil, to allow for quicker shearing.