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2010 2011 BMW 5 Series Forum F10 Can I mix oil on my 2011 F10 N55? |
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03-16-2021, 04:40 PM | #1 |
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Can I mix oil on my 2011 F10 N55?
Hi Guys,
I live on a Caribbean island and ordered a 5 quart jug of Mobil 1 0W-40 European car Oil from Amazon for my 2011 535i F10 N55 for an oil change I just did. Turns out I'm one quart short and cannot find the same oil on the island. I found Castrol 0W-20 on island. If I were to add a quart of the castrol 0W-20 to the existing 5 quarts of Mobil 1 0W-40 would I be t possibly doing any damage to the engine? Thanks for your help in advance! |
03-16-2021, 07:23 PM | #2 |
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I've always heard it's best not to mix brands because of different additives in each brand not mixing well. And I've heard mixing different weights is fine.
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03-16-2021, 07:37 PM | #3 |
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As long as they both meet BMW LL-01 spec, you'll be fine.
Urban myth. If this were true, you'd never be able to change oil brands other than OEM without an engine flush or something.
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03-17-2021, 04:03 AM | #5 | |
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03-19-2021, 04:03 PM | #6 |
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While this is just an observation, I don't think that any Mobil 1 oils meets LL-01 specs. I am pretty sure that Castrol and Pennzoil do offer oils that do.
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03-19-2021, 07:08 PM | #7 |
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I would grab a quart of 5w30 over 0w20.
It is only going to be 16% of the oil in your car so it really shouldn't make a huge difference, but w20 is very thin. |
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