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Wet versus dry vacuum pump

I’ve been reading that wet pumps are better than dry ones because they don’t fail catastrophically, but gradually instead.

Both the mech that I trust and the local one (flying across the US) recommended to switch to a dry pump. So, listening to wisdom, we’ve done so.

But I have a sneaking suspicion that wet pumps are better…

Anyone with practical experience with both?

Last Edited by AF at 05 Aug 22:59

I have merged the two threads and cleaned them up

I am not aware of an argument for going from a wet pump to a dry pump. What reason did your mechanic give?

Administrator
Shoreham EGKA, United Kingdom

It is “the latest tech” and it is cheaper.
I’m skeptical as well, but it is not my plane, and thus not my decision.

From what I’ve read, the wet pump seems to be the better of the two… but I’m still new to ownership and can barely point my way around an engine… learning as I go though, thanks to everyone for their help.

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