I wasn't paying attention and I didn't have good lighting, so today I removed the center bolt of three on the bottom of the oil pan instead of the correct bolt (drain plug) which is on the driver's side. Can't believe I did that. The bolt was tight, at least as tight as the drain plug, and definitely more than the 8.7 lb-ft used on the oil pan supporting bolts. Does anybody know the torque spec on this center bolt so I can properly tighten it again? I wasn't able to see exactly what the bolt supports but it takes a 17mm socket, just like the drain plug. Thanks!