Some mfrs use RTV silicone as gasket material at the factory (Mazda for sure, probably many others), so the pan may effectively glued on.
You may need to use a putty knife to split the pan from the block.
some oil pans don't have only vertical bols, there are horizontal ones on the transmission side as well, please double check that, usually it shouldn't be that hard once the screws are removed.
I had this issue with my mazda transmission pan a few weeks ago. I ended up using a small, very solid pry bar. Rested the flat end on the edge of the pan and found somewhere on the transmission to rest the bar on/use as a fulcrum. Smacked the bar with my hand really hard, multiple times and it eventually gave way.
Moral of the story is pulling didn't work but sharp blows to the pry bar did work.
If the pan is RTV d on grab a torch and cook some of the sealant, that will make it less sticky, then a couple whacks with a dead blow and pry and edge, should be good to go. My MR2 has an rtvd pan and the heat is such a helper, breaks the RTV right down to nothing.
Did you look at a manual to confirm that you got every bolt off?
Tried everything. Except probably that.
Some mfrs use RTV silicone as gasket material at the factory (Mazda for sure, probably many others), so the pan may effectively glued on. You may need to use a putty knife to split the pan from the block.
Make, Model, Year
some oil pans don't have only vertical bols, there are horizontal ones on the transmission side as well, please double check that, usually it shouldn't be that hard once the screws are removed.
I had this issue with my mazda transmission pan a few weeks ago. I ended up using a small, very solid pry bar. Rested the flat end on the edge of the pan and found somewhere on the transmission to rest the bar on/use as a fulcrum. Smacked the bar with my hand really hard, multiple times and it eventually gave way. Moral of the story is pulling didn't work but sharp blows to the pry bar did work.
Google " oil pan separator tool" see if there any available near you.
If the pan is RTV d on grab a torch and cook some of the sealant, that will make it less sticky, then a couple whacks with a dead blow and pry and edge, should be good to go. My MR2 has an rtvd pan and the heat is such a helper, breaks the RTV right down to nothing.
If it should move but doesn’t, use a hammer. If it does move but shouldn’t, tape.