Water drained from cylinders? And its running again? You dodged a bullet.
Car only sat a week, had water in 2 cylinders, shop flushed it out and kept it inside for the night for observation. Next morning more water, they dumped nearly a gallon out of the pipe leading to the intercooler.
Brought it home Wednesday afternoon, car commuted to work Thursday no issue, commuting to work Friday afternoon and Rudolph decided to attack (yes, Christmas is cancelled, the deer ran into the front of the car, fender, light, bumper all damaged)... thankfully my husband is fine, the car still runs, he came home from work and we took it last night to the dealer and left with a buyback check which was deposited to the bank about ten minutes later. No questions/comments regarding the dent, just confirmed it was running, mileage, and hand over the key (just one, the spare is still in my jacket pocket). No questions about 1 vs 2 keys either.
Mine? Well that's still a waiting game. Called to claims on Monday, they "see the offer letter ready, not sure why it wasn't sent to you, I'll open an IT ticket and you'll hear in 2-3 days" followed up with a call to claims on Friday and "I don't know why you don't have it yet, I'll open a supervisor escalation ticket so you will get a call back in a few days"... Personally I'm not holding my breath about getting any offer letter in 2016. (Docs approved 11/3, Offer letter generated and sent to audit 11/8)