Or proboards:

https://en.m.wikipedia.org/wiki/ProBoards

But Reddit is really bad at long on-going conversations unless it has enough to support its own subreddit.

Car maintenance forums are something I feel doesn’t work well on the Reddit system.

Or anything you’d want chronological or heavy in-like image/video embedding

Too bad so many older car forum posts are useless outside of their text now.

Everywhere you go its just large swaths of photobucket/cardomain embed failures for the forums that didn't do image hosting.