For my auto applications, I use Dow Corning:

Amazon.com: Vacuum Grease, 5.3 Oz: Industrial & Scientific

or,

Amazon.com: Novagard Versilube G351 Grease with Radiation Resistance, MIL-L-15719, 5.3 oz Tube: Industrial & Scientific

(Note the temperature use range)

But, it's a bit expensive. This 5.3 oz. tube will last a lifetime, because you use so little-just enough to wet the surfaces. Never enough to see. If you consider it a Surface Conditioner and NOT a lubricant, it will go a long, long way.