If it is still the oil pan gasket leaking, the only thing I can think of at some time or another someone had overtightened the oil pan bolts. When this happens you can tighten them and the pan will still leak. What you are going to have to do is flatten back out those hole pan bolt holes using 2 hammers, one of which must be a ball peen. See this picture.
Attachments are only available to registered users.
Basically what you are going to have to do, is set the edge of the oil pan on a vise's flat surface or on the edge of a work bench, then take a hammer and smash the bolt holes back flat. Look at the picture where I marked the bolt hole as bad, see how it got peened too much from over tightening. Now once you get them all flat again, set the smaller ball peen hammer, the ball end of the hammer on the hole and hit that hammer with another hammer and peen the hole a little the opposite way so the peen now faces the outside of the pan, so when you tighten down the bolts, the bolt heads touch the upraised metal and force the bolt holes down tight again. Just don't over tighten them.
Let me see if I can find a torque. Be right back!
For the engine vin U,
1.Install the oil pan with new gaskets. Tighten the bolts as follows:Step 1: Tighten the 4 corner bolts to 108 inch lbs. (12 Nm).Step 2: Tighten the remaining bolts to 108 inch lbs. (12 Nm).Step 3: Retighten all bolts to 108 inch lbs. (12 Nm).Now 108 inch pounds is 9 ft lbs cause 108/12 there are 12 inches in a foot.
9 ft lbs may be a little difficult to judge with a torque wrench. Unless you have an inch pound torque wrench.
Usually oil pan bolts, I tighten them with no bigger than a 3/8" drive ratchet. I use medium pressure and make sure you go around the oil pan tightening them down evenly. I like to do all 4 corners then skip one bolt and go around all 4 sides, untill they are all snug, then go around again and again, at least 3 times. Then the last time just go around to check them all. If you start to here metal crunching you are going too tight.
If this is the vin S DOHC.
1.Install or connect the following:Oil pan. Use a new gasket and tighten the bolts in sequence to 15–22 ft. lbs. (20–30 Nm).Transaxle support bracket. Tighten the nuts to 71–106 inch lbs. (8–12 Nm) and the bolts to 15–22 ft. lbs. (20–30 Nm).