water spots on my black taco help!!!

Most water spots are from hard water. A water softener will help significantly. A clay bar followed by a good wax/polish will help too. Don't skimp on these, go higher end like mothers or mequiers. These are leaps and bounds ahead of those spray on walk away waxes.
Once its clean there are a few steps you can take to keep it clean for more than an hour. Park in a garage, a portable garage, or put a cover on it while not in use. A bit more maintenance than most other vehicles, but thats the cost of black.

 

Vinegar and water work just as well on paint

OP, give this a read.
http://www.autogeekonline.net/forum/how-articles/29134-how-remove-water-spots-hand.html

 

USE MX-7 FOR PAINT THEN WASH UM THEN POLISH...I PROMISE U THAT WILL DO THE TRICK....

 

I second this. On Monday my truck got hosed by someone running their sprinkler on a day they weren't supposed to (we are in stage 1 restrictions) then baked in the Texas sun for several hours. I was pissed. Wax did nothing, cleaner wax made it look okay from a distance, vinegar completely removed any trace of the water spots. After using a vinegar soaked rag to lightly work the water spots I rinsed with filtered water. Later that night I took a clay bar to the truck and laid on a coat of wax.

 

Put your truck in rice and it'll absorb.

 

Where I live we have pretty bad acid rain from the volcano and when it rains nasty water spots are left...if you don't get to them quick enough they etch into the paint, but the only product I've had luck with removing the water spots is clay bar. But OP, I feel ya about the black paint...it really takes extra work/effort to keep it looking good compared to other colors.

 

X2 for clay bar

 

X1000 this will remove the spots for sure. I used this method to remove some nasty calcium water spots from my father's car (about the size a dollar bill), worked like a charm.

 

well here is what i did last night i got out and washed it good and then dried with leaf blower then hit it up with terry towel and only had time to see if it would work on the hood and used meguirs cleaning polish compound wipe on , wipe off then almost all the spots were gone. Still a couple of stubborn spots but huge diff. The plan is to hit the whole thing up this weekend when i get more time. after going over with the cleaner polish should i go ahead and wax because thats what im thinking? Thanks for all the help guys .!!! BLACK TRUCK = HARD WORK