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Are your exhaust tips black with signs of oil residue?
The key is finding where the oil is going first before assuming it's the turbos.
Do you see any oil leaks? You can add some approved dye to the oil or change to Liqui Moly Molygen oil that has a dye in it and you can then trace a leak if any.
If there are no leaks and you are seeing consumption, check the vacuum system, intercooler hoses etc. to determine if the oil is present before turbo or on the exhaust side. You or mechanic can use an inspection camera through the O2 sensor hole to check for oil.
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