Picture shows a recirculating ball in rubber boot on both ends of armature of AFS sensor. Any recommendations on proper grease I.e lithium Vaseline to resist corrosion on the rear AFS sensor

 

FYI got the used sensor very happy. Prolly squirt that lanolin based Fluid Film in the boots. The AFS sensor is so easy to do a chimp could do it and will take it off and inspect it on occasion see if it is moving smoothly like currently. Winters hard on these sensors but I guess 15 years 200 k miles still designed pretty well Cheers. This one was off a 2002 I was told it would work let ya know if it doesn’t