If you don't change this as a preventative measure, you risk mixing coolant and engine oil together!
Of course, you want to change this if you find oil leaking out the bottom onto your drive belt, but it can also leak internally, allowing coolant to get into your engine oil or vice versa. 272273
M272 M278 OEM Oil Filter Housing to Oil Cooler Gasket
$22.00
SKU:
GEG-272273OCOOLERGASKET 
Product Details
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$389.00
2005 to 2013 M272 V6 100K Forget-Me-Not Complete Service Kit
Kent put together this DIY preventative 100K maintenance kit to improve reliability and increase life on your V6 engine.
These are all maintenance issues that a lot of shops miss. If you want your M272 to break down or lose performance after 100K, then just ignore these items. We are talking prevention here - not waiting until something breaks to fix it! This is a DIY SUPER KIT.