why at 90,000 miles is my sorento 2 qts low of oil and my oil cap smells burnt

Lost 2 quarts of oil in 90,000 miles .. That ain't to bad!! .. IF it's loosing 2 quarts of oil in say 1,000 miles, that's a different story... How many miles driven after engine service (**oil change**) does it take to loose 2 quarts of oil?

thought i ran my oil for a long time between oil changes,until i read this post...check the oil once a week or every time you fill it up with fuel.i wouldn't wait until i put 90,000 miles on it to check it! maybe the people that changed the oil didn't put enough oil back in it! we take for granted that the oil level just stays full and never moves!

It could be that the "burnt" smell you describe is at least partly due to running two quarts low.