But if the oil scraper rings are gunked up the compression can be good since the upper compression rings are performing their duty. What if my oil scrapper rings are what is faulty but the compression rings are good? Please note that all the cylinders are showing gunked up plugs. The problem is not ...

I own a 2007 Volvo S40 2.4I, engine B5244S7. It as 140k miles. I'm second owner since 100k miles. It's a gas, not diesel engine. I'm consuming up to 1 quart of oil every 500 miles. When I first got it it was 1 qt every 1000 miles. Car is dry, no leaks. I replaced the oil trap PCV but no improvement ...