Remote oil cooler thread sealing

[rustydiver]

What's the best thing to put on the threads
I've got some of this
http://www.ebay.co.uk/itm/221043510025?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_633wt_689" onclick="window.open(this.href);return false;
Permatex 80017 Aviation Form-A-Gasket®

Does say on the tin can be used for threads.

Of PTFE.

Or other.

 

[rallye dale]

Plastic tape for everything

 

[Trikky2]

Old fashioned plumbers hemp works.