how long does it take for oil to drain from filter back into crankcase

Turbo_power4ever · 01-29-2016, 02:41 PM

like the title states, i was wondering how long it takes. the other day i pulled in the driveway from a 10 min drive. let the car sit for 15 mins or so then opened oil cap, started draining the oil and went to open the oil filter cap. when i did, alot of oil spilled out onto the alternator and belt n whatnot. i was like wtf. and the filter was real hard n kinda sucked in so i ripped it off the plastic filter cage thing. i cant remember if it was a bosch or k&n filter. i put a new mann filter in now. am i suppose to wait longer or u guys think it was a bad filter. i changed both o rings and lubed em up btw.

MightyMouseTech · 01-29-2016, 02:44 PM

The oil filter housing will stay full, until you start removing the filter cap. Just do it slowly, especially when you get near the end of the threads.

Turbo_power4ever · 01-29-2016, 02:45 PM

i was worried the pistons or watever werent being lubricated properly if the filter was clogged. i drove it for a couple months with that same filter

Turbo_power4ever · 01-29-2016, 02:46 PM

Quote:

Originally Posted by MightyMouseTech

The oil filter housing will stay full, until you start removing the filter cap. Just do it slowly, especially when you get near the end of the threads.

o really? o ok good. i was just wondering because ive changed my oil on this car probably 5 or 6 times before and that never happened. thanks for the quick reply

Phil325i · 01-29-2016, 03:06 PM

That's why it's quite a good idea when re-filling after an oil change to put half a litre or so into the filter housing before fitting the new filter...

Turbo_power4ever · 01-29-2016, 05:23 PM

Quote:

Originally Posted by Phil325i

That's why it's quite a good idea when re-filling after an oil change to put half a litre or so into the filter housing before fitting the new filter...

good tip.

robthewrench · 02-04-2016, 08:38 AM

The oil filter housing won't drain quickly since it is the highest point in the engine, but has no vent above it. If you slightly loosen the oil filter cap, this will allow air in and it will drain faster. Loosen it too much though, and the oil drains out from the cap an makes a mess.

If you wait a while, even without loosening the cap, it will drain, but not as fast as the rest of the system.

01-29-2016, 02:41 PM	#1
Turbo_power4ever Captain 95 Rep 607 Posts Drives: Fbo blacked e92 Join Date: Feb 2015 Location: Nky iTrader: (2)	like the title states, i was wondering how long it takes. the other day i pulled in the driveway from a 10 min drive. let the car sit for 15 mins or so then opened oil cap, started draining the oil and went to open the oil filter cap. when i did, alot of oil spilled out onto the alternator and belt n whatnot. i was like wtf. and the filter was real hard n kinda sucked in so i ripped it off the plastic filter cage thing. i cant remember if it was a bosch or k&n filter. i put a new mann filter in now. am i suppose to wait longer or u guys think it was a bad filter. i changed both o rings and lubed em up btw.
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01-29-2016, 02:44 PM	#2
MightyMouseTech Major General 4346 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	The oil filter housing will stay full, until you start removing the filter cap. Just do it slowly, especially when you get near the end of the threads.
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01-29-2016, 02:45 PM	#3
Turbo_power4ever Captain 95 Rep 607 Posts Drives: Fbo blacked e92 Join Date: Feb 2015 Location: Nky iTrader: (2)	i was worried the pistons or watever werent being lubricated properly if the filter was clogged. i drove it for a couple months with that same filter
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01-29-2016, 03:06 PM	#5
Phil325i Brigadier General 639 Rep 3,215 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	That's why it's quite a good idea when re-filling after an oil change to put half a litre or so into the filter housing before fitting the new filter... __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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02-04-2016, 08:38 AM	#7
robthewrench Captain 266 Rep 950 Posts Drives: 11 E90 335i Join Date: Aug 2014 Location: Columbus OH iTrader: (0)	The oil filter housing won't drain quickly since it is the highest point in the engine, but has no vent above it. If you slightly loosen the oil filter cap, this will allow air in and it will drain faster. Loosen it too much though, and the oil drains out from the cap an makes a mess. If you wait a while, even without loosening the cap, it will drain, but not as fast as the rest of the system. __________________ bone stock
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