Engine Burning Oil problems of the 2015 Buick Regal

I started experiencing excessive oil burn at around. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its "normal" for these engines. I discovered a bad oil leak. Vacuum pump issues. Multiple camshaft seals worn away, that were hard as rock from excessive heat including piston seals that had been affected. Thought this possibly had fixed the excessive oil burn. A few weeks later I received the oil level low notification on the car computer. I check and its very low. The oil burn is continuing with no clear signs of an oil leak with dirty oil. There is possibly more problems within the engine that aren't seen. I have checked previous complaints. I notice that this engine has many of the same problems with the turbo package on gm vehicles. It has a rough idle and engine hesitation. These characteristics seem to include inconsistent engine performance sound and are felt through the pedals, the driver's seat and steering wheel, there is a putter and hesitates while accelerating.

I started experiencing excessive oil burn at around 85,000 miles. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its "normal" for these engines. At 109,610 miles, I discovered a bad oil leak. I took the vehicle into an independent mechanic to diagnose and fix the problem. He determined that the vacuum pump had broken off into the engine which caused a seal problem for the top of the engine. As he opened up the top of the engine to remove the broken pieces, he noticed multiple camshaft seals that had worn away, that were hard as rock from excessive heat including piston seals that had been affected, he repaired them all after ordering the replacement parts from Buick. Thinking this possibly had fixed the excessive oil burn, I stopped checking the oil levels. A month and 1,000 miles later, I received the oil level low notification on the car computer. I check and its very low. The oil burn is continuing with no clear signs of an oil leak with dirty oil. There is possibly more problems within the engine that aren't seen. Checking previous complaints. I notice that this engine has many of the same problems with the turbo package on gm vehicles.