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8
deleted 8 points ago +8 / -0
9
Data 9 points ago +9 / -0

Purge with nitrogen and seal it off. A good air-tight seal is easy to achieve with PVC. Then when you need to dig it back up you can use it immediately without having to tear it down and clean out all the tranny fluid (ew).

2
Peppers 2 points ago +2 / -0

Argon?

1
Data 1 point ago +1 / -0

I've never tried it but I think it would work just as well, if you have access to it.