Business ProfileforCiti Group Auto Inc

I purchased a 2009 Chevrolet Traverse on 2/25/2022 for $8999.00 plus warranty coverage, GAP coverage, taxes, etc. It had ******* miles on it at the time of purchase.About a month later while driving on city roads at ***** mph my car would down shift, the amps would speed up so I had no choice but to pull over. I shut off the engine for 10 min and then restarted it. It drove normal at that point. Then I noticed an oil leak, and my car was saying "Oil pressure low, shut off engine". I took it to two local mechanics and neither of them could find the leak so I took it to ************************** on 6/21/22. My extended warranty company paid $3479.85 to replace oil pan gasket, front timing cover gaskets, valve cover gaskets, intake gasket, camshaft solenoid seals, and front rank seal. I paid $2275.07 to replace steering ****************** assy. Then my car was saying "change engine oil soon", "1% oil life remaining". I had 3 oil changes done on the car since I purchased it. Then at ******* miles I took it back to **************************. They recommend a new engine. I am out $14,000.00! The manager at Moto Maxx wants me to bring the car to them in to see what they can do. They think their mechanic is better than a dealer. Who is going to pay for this?The warranty they sold me only covers the JD Power Average Trade in value, which is $4000.00.I think Citi Auto Group *** dba ************ should be held accountable for at least half of my loss.