Just got our new R182 back home today and it was about 100 degrees and extremely humid so I was already having a pretty hard time. We had a somewhat hard landing that bounced once, main gear first on the initial touch and the bounce after. Half of my hours are in a 172RG, and I’ve never had as hard a landing as this so I really don’t know how to gauge whether this might have damaged the gear. Externally, everything looks ok, taxiing feels fine, no external damage visible and the firewall looks ok. The only sign of anything is a little oil (definitely not hydraulic fluid) on the left main gear strut near the retract point. I am leaning towards just having a mechanic check to be absolutely sure but I want to know if there’s anything else I should look for that would be indicative of damage.