I just recently had my engine rebuild and so far I had put 3500 miles on it. The car runs fine. The other day my oil light came on and so today I changed out the oil and noticed that it was very low. I did my last oil changed at 2k miles ago and I checked every where for a oil leak but theres none to be found. My question is, is it normal for a fresh new motor to burn a lot of oil? how long does it take before it stops?