Just because the turbos are bigger doesn’t mean they hold any more oil. The center sections of the turbos are probably identical or very close in size at least, certainly not enough size difference to say they hold more oil. The only thing larger would be the turbine and compressor housings most likely. Also considering they sit in the same spot on the engine.. the plumbing to these turbos is probably close to identical also.
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Opinions are great and all but the original topic of this thread is related to trying to find an accurate answer as to how much oil our 2.7s are supposed to hold (for an oil CHANGE...not factory fill). Now that Ford finally came up with the latest (and hopefully) accurate answer, suddenly the thread went down the rabbit hole of Raptor engine oil capacity. If someone who actually HAS a Raptor believes 7 quarts is not appropriate for his or her oil change, start a thread on that. Tell Ford they screwed up and that it is your belief (with zero actual evidence) that by golly the plumbing and turbos and everything else oil-related on the 3.0 and 2.7 are so closely matched that both engines need the exact same amount of oil. Or, just buy a Raptor stick and pretend you have a 3.0 and when you run 7 quarts your new stick will "support" your belief/assertion. Easy solution!
If anyone in this forum is a Ford parts person (who can compare PNs) or a tech (who actually wrenches on BOTH) 2.7s and 3.0s and is willing to share factual information regarding similarities and differences between the oiling systems of both engines, we are all just guessing as to why the 2.7 and 3.0 capacities are (currently) different.
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