Navy uses a lot of brass because water doesn't corrode it like iron and when brass corrodes it's green. What I see in the Jeep pic doesn't look like brass corrosion. But that whole picture is one giant rust blob.

Good to know.

Was it the place on Auburn Blvd?

All the links are just for info. My mind is not made up on what was said, but it gives me some additional insight. How much applies to our applications is "who knows." What does apply is this, neither plastic or brass floats last forever. Just matter of how long they last. I can only guess why these floats are so readily available.

What I have noticed is I installed a new sending unit with brass float in my tank 9 yrs ago. It worked great till about 3 yrs ago. Now my gauge is erratic when I fill the tank it goes to Full, after sitting for a few hours, it goes to 3/4, then to about 1/2 tank after more time. And that is without driving it around. So something is up with my sender. I know these aftermarket sending units are marginal at best.

The store I went to was on Auburn, that is right!

That's good to know! Thanks again for the info.