You are creating a mix and concentrating the contaminants and making sure that none of these contaminants escape. When you add a quart without knowing what is causing oil consumption you are at least keeping all the bad stuff in the mix. No matter how good the new quart of oil might be including any 3rd party additives, you can assume that the bad stuff is getting worse and that there is now more of it now. When you continue long enough you will one day be able to decide if your method was cost effective or not.
A UOA might help you make the decision for how to proceed now instead of guessing. The solution might be something simple or you might be encouraged to sell it right away. Advice from across the Internet is probably less effective that the UOA.
For me, I owned a 96 850 Turbo Wagon which was bullet proof. Nothing ever went wrong until a pickup ran my wife thru a guardrail at 70 on the freeway. Airbags went off as the car sailed over a bank sheering off posts and sailing thru the air from the ramp to a crossing freeway and destroyed the car. My wife climbed out without so much as a scratch confirming that new cars are much safer. That ended a car that we were going to keep forever. Nothing ever went wrong and a UOA showed the oil was in great shape. This car was a Volvo Volvo and not a Ford Volvo or a Chinese Volvo. It was an excellent car but we did not like the newer ones and purchased something else, instead. We could not find a used one. We were told that they disappeared quickly when offered for sail.
A UOA might help you make the decision for how to proceed now instead of guessing. The solution might be something simple or you might be encouraged to sell it right away. Advice from across the Internet is probably less effective that the UOA.
For me, I owned a 96 850 Turbo Wagon which was bullet proof. Nothing ever went wrong until a pickup ran my wife thru a guardrail at 70 on the freeway. Airbags went off as the car sailed over a bank sheering off posts and sailing thru the air from the ramp to a crossing freeway and destroyed the car. My wife climbed out without so much as a scratch confirming that new cars are much safer. That ended a car that we were going to keep forever. Nothing ever went wrong and a UOA showed the oil was in great shape. This car was a Volvo Volvo and not a Ford Volvo or a Chinese Volvo. It was an excellent car but we did not like the newer ones and purchased something else, instead. We could not find a used one. We were told that they disappeared quickly when offered for sail.
