John Strenk· Super Moderator
No, there is no grease to stabilize the needles. I remember the guy who first posted that garbage and now everyone takes it for gospel.replaced my fuel sending unit . The fuel gauge needle was bouncing a lot more than the usual i think. Needle still bounces. If I remember correctly the factory gauge uses thick geese to stabilize the needle. I do have the Stewart Warner repair
kit temp and fuel gauge for jeep cj7 and I trust them. Anyway I replaced a couple hoses while there and switched to the grass float as well as installed carriage bolt retainers for 5/16 ths screws. They’re like push nuts that keep the carriage bolts from being pushed out when you raise the tank on them .
on a side not I see gear oil coming out of my brake adjuster holes of the backing plates.
The only stabilizing on the OEM gauges are the natural tendency of metals to heat up.
The needle moves from the bending of a bi-metallic strip. There is a wire wrapped around the strip and as current passes through the wire it heats up and bends the strip.
Since it takes time for the wire to heat up, it takes time to heat the metal and it takes time for the metal to bend, this is all the dampening the movement needs.
Some of the newer gauges use a different way with magnets and coils, these respond much faster than the original oem gauges. You will see more bouncing with these.