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You're going to get about 2 dozen different answers on this one, and likely a bunch of references from Blackstone and BITOG. I personally just use the manufacturer-speced Motorcraft synthetic blend and change every 5000-6000 miles. From what I have read, it's a pretty highly-regarded oil and the price is very competitive on Amazon.
One note for you during the process: I have yet to figure out how to get the filter off without dripping oil all over the subframe. This car is the most frustrating I have had in the last 10 in that regard. Also, make sure the engine is warm and the fill cap is off when you drain the oil, or it is very slow on this engine.
Have fun!
What is the factory fill usually, is it full syn, blend or conventional?
I couldn’t find anything about synthetic or not. Most oils now are some version of synthetic. As long as its the right weight and a quality oil it should be fine. I say that but I have one oil I avoid now. Mobil 1 yrs ago they changed from their high quality Euro standard to a very cheap blend. My VW at the time went from 1quart every 5000 to 4quarts every 3000. In one oci. I switched to cheveron oils and it went back to roughly 1quart every 5000. My Sequoia did the same thing only it went from zero needed to 4 quarts in 5000.
So if you use Mobile 1 carry spares.