[Phatcat]

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?