Should be able to at any auto store... If they wont let you rent it, just buy it and sell/return...
After that is a compression test, you can do it yourself or have a shop do it for about an hours worth of time

I'm just going to take it to my mechanic I'm having other problems too and don't really have time or skills to fix it.

I asked if you checked the oil not if there was a leak. there are other places to lose oil than onto the ground