My 2007 mini s runs strong and idles smoothly. No obvious codes. BUT- it is going through a quart every 150 miles. There are no evident oil leaks. I have not yet done a compression check. Could this be the turbo oil seal? If so, how do I diagnose. Thanks - your write-ups are world class!

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This post was auto-generated based upon a question asked on our tech article page here: MINI Cooper R56 Turbocharger Replacement (2007-2011) | Pelican Parts DIY Maintenance Article

Remove the turbo ducts and inspect the hoses for excessive oil. Some oil residue is normal, look for puddles.

- Nick

Check your PCV. They're known to cause issues as engine oil consumption increases significantly if the crankcase ventilation system is defective. Read our oil consumption article here: MINI Cooper R56 Oil Consumption Diagnosis (2007-2011) | Pelican Parts DIY Maintenance Article. To check the PCV, disconnect the PCV hose on the valve cover and see if its heavily coated with oil. Definitely perform a compression and leak down test.