I have a 2013 LX with 140,000 miles. Over the years I have kept up consistently with the oil changes every 3,000-5,000. About 2-4 months ago I noticed the engine using oil so I’ve topped it off with around 2 quarts every 500-1,000 miles. I spoke with the local KIA service manager who basically said since the engine is using oil that leads to engine failure. From experience is there any confirmation to this?