I've got a pretty bad oil leak hopefully just from the oil pan and not the rear main seal. Can I change the gasket with the engine still in the truck?

 

Make sure that u dont have a rusty pan

 

Yes, you can. Buy a Chilton or Haynes manual for your truck, it has the procedure. It involves removing the upper intake for clearance, unbolting one motor mount, unbolting exhaust, jacking up one side of the motor, dropping pan then removing oil pump then the pan can be dropped out and removed so you can do a proper job of affixing the new gasket and end pieces to the pan.....Not a fun job, but doable with time and patience, helps to have a good garage to work in and a helper.

 

If its just the gasket you can remove all the bolts on the pan and it will drop about 1 inch or so. Enough to replace the gasket. I did mine this winter and just removed the pan bolts, nothing else. 92 F150 4x4 with a 302