DIY oil change update - 2nd drain plug - BMW M5 Forum and M6 Forums
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post #1 of 17 Old 19th September 2009, 05:01 PM Thread Starter
ssigarto
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DIY oil change update - 2nd drain plug

Like many on this board, I do 2 oil changes in between the recommended BMW 15k mile service. Also, like many, I searched and came across a great post that shows step by step how to change the oil inthe e60. The post is shown here for refference:
https://www.m5board.com/vbulletin/e60...-pictures.html

Now, while I was at the dealer yesterday for a scheduled maintenance, I watched the tech perform my oil change and found out something new. In addition to the drain plug shown in step 3 of the above link, there is a 2nd drain plug which is not seen until the entire black plastic front under-tray is removed. This 2nd drain plug is located by one of the dry sump pumps and when you remove that drain plug about another 1/2 liter of oil comes out. This explains why there are 2 washers in the oil change kit. This 2nd drain plug is exactly like the main drain plug and it is located abut 1 foot toward the front of the car relative to the main drain plug. Sorry, no picture.

We then refilled the oil and added 8 liters. After checking the oil reading, the car showed a -4 on the display. Adding the 9th liter bumped the reading to +6 on the readout.
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post #2 of 17 Old 19th September 2009, 06:49 PM
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Originally Posted by ssigarto View Post
This 2nd drain plug is located by one of the dry sump pumps and when you remove that drain plug about another 1/2 liter of oil comes out. This explains why there are 2 washers in the oil change kit. This 2nd drain plug is exactly like the main drain plug and it is located abut 1 foot toward the front of the car relative to the main drain plug. Sorry, no picture.

We then refilled the oil and added 8 liters. After checking the oil reading, the car showed a -4 on the display. Adding the 9th liter bumped the reading to +6 on the readout.
This second drain plug is not mentioned in the BMW TIS Engine Oil Service.

The M6 does not have an access panel for the oil filter, so the entire front under-tray must be removed for an oil change. It will be very little extra work to open this 2nd drain plug.
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post #3 of 17 Old 21st November 2010, 04:56 PM
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post #4 of 17 Old 22nd November 2010, 03:00 AM
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I looked all over and could't find a 2nd drain plug...
you have to remove the large chassis tray...and I believe that it may have not been present until MY2008
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post #5 of 17 Old 22nd November 2010, 03:07 AM
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I never added more than 8 1/2 liters...

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post #6 of 17 Old 22nd November 2010, 08:17 PM
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Originally Posted by ideliver View Post
you have to remove the large chassis tray...and I believe that it may have not been present until MY2008

Yeah i removed the front one and rear one that spans the block down to the rear of the transmission. Is it a plug just like the main drain one and is the hole facing the ground?

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post #7 of 17 Old 23rd November 2010, 05:55 PM Thread Starter
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post #8 of 17 Old 23rd November 2010, 06:03 PM
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Yes, exactly how you described it.
Then i only saw just one... my production date is 11/2005 if that makes any difference.
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post #9 of 17 Old 23rd November 2010, 06:07 PM Thread Starter
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post #10 of 17 Old 23rd November 2010, 09:31 PM
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Quote:
Originally Posted by ssigarto View Post
My 08 has 2 drain plugs. Did you take off the black undertray?
yes, the big *** one in the front that covers the belts and has the scoop for the cooler and the one behind that covering the bottom of the oil pan to the back of the smg tranny.
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