I Use Wilson's Ultima Lube and no problems with mine.

I use Miltec with no issues.

I use rem oil on my wifes and have no problems

I use either Gunslick or a teflon grease I have on the rails . I DL a lube chart from Glocktalk for the Kahr models........WVleo

thanks for the replies.

I use Mobil One based on advice from other forums. Works great!

Shooter's Choice FP-10, and Gunbutter on the rails and barrel hood. Both superb products!

I don't own a PM9 but this looks like a lube promo thread so I thought I'd pitch in my two cents.

I use Tetra gun grease for the larger metal-on-metal surfaces (slide joint areas, barrel contact areas, spring apparatuses) and use Rem Oil on everything else (trigger/hammer mechanisms, protective coat for external surfaces). I knew these were great lubes when, after using them, the action in my handguns dramatically improved.