My Sorento 2013 consumes oil like nobody’s business. No leaks, no smoke AND the oil light (the warning light) never come on. Recently my engine light has been intermittently turning on then off. I took it to KIA and apparently they’re not able to diagnose the problem when the engine light is off. I was told to come back when the engine light comes on, but at this point I’m afraid I might be messing up my engine. Any advice?