To help reviewers find and be interested in this thread, could you please change the title to something that describes the situation? An example would be something like:

Bluff wheel straight full pot on river board w/ two missed flush draws?

//Mod.

So I play way lower stakes but I take the right to ask "WTF preflop?"- blinds must really never 3bet or overcall to flat this. I think bluff turn, bluf friver is way more effective and you weaken your range by checking turn.

Yes, pf should be a very easy fold at any stakes, and beyond that it's not very meaningful to discuss because it's a spot we should never be in in the first place.

Agree on the preflop thoughts. As played, I think it's a close decision on the turn. Given your stack size, on such a dynamic turn I think villain will likely pot all his strong hands/big draws (including nut diamonds). So when he checks, I think his range is mostly medium strength hands. You only need 36% EQ to stack off on the turn and assuming your diamonds are almost always good, you have about 30%. Therefore, villain needs to fold about 25% to make it profitable. Hard to say whether or not he'll put you on a draw and look you up anyways, but you should have some fold EQ. On the river, I think you rep a straight very well and I like the bluff.

I don't see what you're representing as a bluff. You will win when he has air. Also there's no wheel straight out there, so title doesn't make sense.