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      05-02-2017, 05:44 AM   #1
Phatcat
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Oil drain plug washer

Questions guys, I just had oil changed today, and when I walked by to check on the car, I noticed there was a small washer and small o-ring left on the tool cart. I asked the mechanic why weren't they used, he said for F10 M5, they weren't needed, they were for the E60 M5 because it has two drain plugs.

So only the big o-ring and big washer was used on the F10, is this true?
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      05-02-2017, 06:37 AM   #2
Phatcat
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Searching around the net and looked under the car, I am pretty sure there is only one drain plug. So it's probably true the small washer and o-ring is not needed.
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      08-04-2019, 05:05 PM   #3
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Quote:
Originally Posted by Phatcat View Post
Searching around the net and looked under the car, I am pretty sure there is only one drain plug. So it's probably true the small washer and o-ring is not needed.
Just curious, anyone have issues with the washer that comes with the Mahle filter to be too big for the oil drain plug?
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      08-04-2019, 06:17 PM   #4
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That's not the copper washer you want to use anyways. 12x18x1.5mm copper wash is what you want to use for your drain plug
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      08-07-2019, 10:09 PM   #5
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Quote:
Originally Posted by mrtt View Post
That's not the copper washer you want to use anyways. 12x18x1.5mm copper wash is what you want to use for your drain plug
Thanks!
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      03-07-2020, 01:02 PM   #6
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The small copper washer is the correct one to use for the drain plug. When you buy a change kit with the filter, it comes with all 4 rings. I only use the smaller copper and large rubber. Not sure what the other two are for
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      05-20-2020, 09:10 AM   #7
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https://www.fcpeuro.com/products/bmw...-07119963151-1

This is the washer I use.
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      05-03-2023, 01:42 AM   #8
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Quote:
Originally Posted by Phatcat View Post
Questions guys, I just had oil changed today, and when I walked by to check on the car, I noticed there was a small sump plug washer and small o-ring left on the tool cart. I asked the mechanic why weren't they used, he said for F10 M5, they weren't needed, they were for the E60 M5 because it has two drain plugs.

So only the big o-ring and big washer was used on the F10, is this true?
it is possible that different types of cars may require different types of washers and o-rings during an oil change.

Some cars, particularly those with multiple drain plugs, may require smaller washers and o-rings to ensure a proper seal. Other cars may only require a larger washer and o-ring. It's possible that the mechanic was correct in stating that the smaller washer and o-ring were not needed for your F10 M5, but it's always a good idea to double-check with the manufacturer's specifications or a trusted mechanic to ensure that the correct parts are being used during maintenance on your vehicle.
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      05-03-2023, 09:07 AM   #9
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Don't go by the oil filter kit confusing o rings, best to buy assorted copper crush washers and choose one that fits snugly around the drain plug thread and don't over-tighten.
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      05-04-2023, 03:56 AM   #10
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The drain plug itself is a real pain to get to, right at the back of the sump and behind, this is on a car not far from two tons so I now take car to dealer who does oil change and filter from the practicality of a ramp.
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