[kstylianos]

Timecerts in an aluminum case, replaced the faulty Dilivar with Dilivar...hmmmm The fault prone Dilivar studs are usually replaced with early steel or ARP and the timecerts are usually reserved for the magnesium cases...unless the threads in your AL case were damaged somehow.....just an FYI. If that's really what they did, maybe they did some other 'unconventional' things during the rebuild.

Max oil consumption should be around 1 quart per 600 miles, but with a 'recent' rebuild you should be in the 1000+ mile/quart range. I'd have your mechanic do a leak down w/ compression test to see if valve guides or rings could be your problem. Unless your oil leak is BAD, you are probably loosing oil by the rings or guides. Let the tests be your guide.....post your compression and leak down results if you get them.