op. the chevy cobalt and your new 2.4 suv were both HORRIBLE vehicle purchase decisions. I would suggest you really start researching vehicles before you buy them. I am going to predict you just purchased someone elses problems with the 2015 2.4, and i m sorry for your expensive mistake if my prediction holds true. If the oil was "thick" as you claim i would guess that the dealer or previous owner added a thickening product (lucas or something) to try and mask the amount of oil the engine is burning. the oil may then have turned black because its flow properties have been changed and the oil got dirty and or got "worn" out faster than normal. 5w-30 oil is never "thick" in my expereince, normally rather watery.
good luck with the vehicle, i would of personally never bought it, being an owner of one myself.
make sure you drain and fill your transmission soon and if you live in a climate that gets below 40 degrees or so in the winter, buy the cfm oil breather cap to protect your engine. good luck, read through these forums
also if you are approaching 40k miles soon i d recommend changing out the rear and front differential fluids. i personally use amsoil severe gear and it has beening working wonderfully.
2014 GMC Terrain 2.4 SLE-1
Last edited by adidas6804444; 02-26-2019 at 12:49 PM.