I recently changed my spark plugs and now it was time to change the oil. I drained the oil and found that it smelled like gas. I guess this means the engine is running too rich. Has anyone else experienced this? Is it possible one of the plugs is not firing properly and not burning all the fuel in that cylinder? I searched the forum using many different variations but did not find anything related! Thanks for your help. By the way it's a 2018 with 16,000 miles on it!