Here is my experience. First week of driving with windows down here in California I noticed exhaust smell with oil. Thought it was normal. Read this site checked my oil after about 1,000 miles and noticed it was low. The one thing I hate is the dipstick is one biznitch to read with the sound tube connected. That was the first thing to go. After another 1,000 I found it low again. I currently have 3,600 miles and I have burned about 2 qts. I do not have the exhaust smell with oil anymore which leads me to beleive it is not burning anymore oil. I try to check it weekly.