2014 Acura TL Engine problems

showing any signs of burn oil such as any type of smoke. I go to the dealer to buy a quart of oil- parts guys asked me for model and year of my car- I said 2014 TL he comes back with the quart that says 0W- we put it in it. A week later we get another quart- same part guy brings out 0W- I said why are you giving me 0W when my car manual and engine cap clearly says 5W- he is puzzled and says ok if you want 5W I'll give you that, I said I'm only going by my car manual and engine cap. My husband puts it in and still low, at this point my husband goes to auto store and buys 2 more quarts of 5W. Car still low on oil- I take in the next day to the Acura dealer for an oil change and explain everything to the advisor and service manager. The manager digs deeper into my maintenance and see's that I have been keeping up with the maintenance for 11 years. Now he digs deeper and looks up my VIN # for any recalls- apparently there was a recall on my engine piston and piston rings which causes an issue with burning oil and/or oil consumption &make it seem like there is no oil in car. I said I never received a recall. He states unfortunately I am out of the recall window and nothing can be done. I am original owner and having been living at same address 32 years-never got a recall notice. Per NHTSA there's 86 manuf. comm. on the engine pistons from 2016-2019. They say I have Rear main seal leak-they want me to fix first before they can advocate for recall- 2 separate issues