Frau Putzer's 2006 V6 Honda Accord didn't need top-offs before 8k mile oil changes with 5W-20 synthetic. We sold it at 147k miles. That's why I'm not worried using the BMW recommended 0W-20 in her 2018 X3 30i.If you are DIYer, I recommend oil change every 5000mi. You can buy oil kit at FCP and you can return oil for refund. but they don't have Penzoil Euro Platinum 5W40 I recommend. It is not easy to find offline store but some online store have it. There are lots of discussions for motor oil and I think it is personal choice. I prefer thick oil. (but for my 2011 Camry, I always use 0w20 and no oil consumption at 160k miles)
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I wanted to add, now on my 2nd 535xi now a 2013...the 2011 was previously totaled 1 yr ago... got T-Boned right in my driver's door...I'm lucky to be alive...not a scratch...although right after it happened I was wondering around in the I/S picking up debris in shock...the whole driver side ripped open like a can opener...there is a steel beam on the diagoniale in the driver's door that didn't bend...I believe that beam kept the SUV from entering the cabin....it happens so fast! ...always used LL-01, of course, it's recommended and my changes are at 7,500-8,000 miles intervels...Castrol 0-40... Good all around weight...BMW will sell their soul to the devil...it's all about marketing...who will pay BMW more dinero to have their name as the oils of choice... just like with anything, one day your a hero-- the next day ur a zero...the boss likes the job ur doing today-- the next day he doesn't like the way your **** smells. So, what is BMW touting now? Shell, hell could be Penzoil tomorrow... or Liqui Molly...that would be Molly's Game. I would do her ,Depending what time of year and where you live the oil weight/ viscosity effectiveness will vary. I live 1/2 north of Philadelphia and I roll with Castrol 0-40. I have 75k mi on mine and I get great performance and 23.5 around town....you have started an issue that will give you personal faves for days.
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