I had my local mechanic do a compression test and all numbers were from 150-153. Is this considered to be a good compression? Do you know what the stock compression is for my car? I have svt mustang cobra and couldnt find any stock #'s. i had the compression test done to see why i have been burning 1/2quart every 1000-1200miles. No leaks. what could be the problem? Should i be worried about the oil consumption. I use mobil 1 10w30 synthetic. Would switching back to regular oil help? Any help is appreciated.