Got my car back this week with the new engine, thanks Hyundai and my local dealer!
2011 Sonata 2.4, 160k miles, I own the car since 110k miles.
OCIs about 3k miles at same dealer.
Oil consumption results:
1. 500miles 2qt
2. 500miles 1.5qt
3. 500miles 2qt
4. 500miles 2qt
Replacement took about 3 weeks, 1st week was a "waiting" for Hyundai's approval. Rental was provided for the whole period.
Before the test, dealer also said they would do a compression test and might inspect the engine with borescope, but eventually this wasn't done, or at least I am not aware of it.
I wanted to replace few more parts along with the engine, like the serpentine belt, but was told that mechanic would let me know if anything needs replacement. Next time I was contacted with "car done, transferred parts were in good shape". Allright
I did visual inspection, all looks good, hopefully nothing was screwed up. I plan to keep a closer look on fuel pump and "break in" the engine for about 1k miles.
Replaced parts as per invoice:
21101-2GK50-QQH ENGINE ASSEMBLY-SUB
21111-2GK50-QQH SERVICE KIT
21111-2GK70-QQH SERVICE KIT
25470-2G050-QQH TUBE ASSY-OIL COOLER
I wish good luck to everyone with their oil consumption tests, if you think whether to do it or not, do it! I agree though that 1q per 300miles is somewhat too much.
Will also paste here my experience trying to fight oil consumption, in my case this was just a waste of $$.
I tried Liqui Moly engine flush twice (for 15 min before oil change), Bg109 EPR (for 15 min before oil change), Sea Foam twice (as directed, for 500 miles before oil change), MMO last 3 times (every time for 3k miles). Also piston soaked with Sea Foam twice and with MMO once (every time overnight), NOTHING HELPED. Last 40k miles I had 3k OCIs with full synthetic oil (5W30 high mileage Castrol and then Valvoline) and M1 filters.