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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > Oil Viscosity
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      12-10-2024, 09:25 PM   #1
sokyoto
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Oil Viscosity

Im currently stage 1 tuned with MHD on a Gen 1 B58 and I have around 70k miles.
I just did an oil change around 500 miles ago but today after me and my friend were done spirited driving for a little my oil level had dropped a little.
I was wondering if this was normal with the B58 and if I should start using a different viscosity oil for my next oil change.
Im also planning to upgrad eto stage 2 in a month or two
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      12-11-2024, 09:19 AM   #2
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What weight did you put in? Although, I'd look for a leak first, if it went down that much in such a short period.
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      12-11-2024, 09:22 AM   #3
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Liqui Moly 0w20.
And ive been monitoring it for leaks for a little but i havent seen anything yet.
I also had it on a lift the other day and there wasnt any leaks
Im going to keep checking tho
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      12-12-2024, 10:29 PM   #4
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What do you mean "dropped a little"? 0W20 is fine for this engine, my tuner guy suggested 0W30 for Stage 2 for a bit better protection.
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      12-12-2024, 10:34 PM   #5
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It had dropped by half a quart
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      12-13-2024, 01:18 PM   #6
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You stopped and re-measured with the iDrive measurement? Were you concerned beforehand about a leak?

I didn't realize the iDrive measurement showed this with that kind of precision.
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      12-13-2024, 01:26 PM   #7
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Well I checked in the morning and it was at max and when i got home after driving hard it was slightly lower and I added half a quart to get it back to max
It hasnt dropped since then tho
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      12-16-2024, 09:09 AM   #8
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If you were tossing the car around really hard, then checked the oil, it might be still draining down from higher portions of the engine.
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      12-16-2024, 09:11 AM   #9
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I checked when i got home and also around an hour later lol
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