I would think it unlikely you damaged anything that quickly (tho not impossible given the mileage on the odo).

JCL is probably right but you would have to flush rather than just a drain and fill I think. If that fixes your problem you might want to think about another flush 10k miles later as I doubt that you would get all the Amoil out in one go.

Good luck!

__________________
2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.