Grease Is The Word.

I picked up Super Lube 21030 from Harbor Freight. It works really good. The three ounce tube should last a good long time.

The ultimate test was using it on a free flashlight I received from Liion Wholesale. It is a very cheaply made flashlight, the threads feel really thin and sharp. Super Lube made a noticeable difference on them.

I got it, it’s OK. But I got Motorcraft XG-12 as well and I use it more because I know it won’t make any o-rings swell.