This is a little late but if it helps at after I cracked my oil pan 2 years ago (don't ask) I put some JB Weld on 2 inch crack on the inside after cleaning it up and havn't had any trouble since. Put on about 20,000 miles and thats driving in -30 in MN and 95+ in Florida this summer, so its seen its share of shrinking and expanding.

95 LX-with a mind of its own 24v DOHC SVT exhaust and K&N=all thats worth modding Go Fighting Sioux!!!