Need a better exterior white caulk

[MojaveJoe]

Last year I did some body repairs around my wheel well after a blowout. After reinstalling the new fender flare and trim I caulked all the joints with your basic white silicone caulk. Now everywhere I used it is almost black from collecting dirt and dust while in storage. The original factory caulk next to it is still white.

What kind of caulk can I find for general exterior joint sealing that will dry smooth and hard and not collect dirt, but still be flexible as so many joints require, like the factory caulk?

Any and all advice and experiences welcome.
Joe

[MojaveJoe]

Last year I did some body repairs around my wheel well after a blowout. After reinstalling the new fender flare and trim I caulked all the joints with your basic white silicone caulk. Now everywhere I used it is almost black from collecting dirt and dust while in storage. The original factory caulk next to it is still white.

What kind of caulk can I find for general exterior joint sealing that will dry smooth and hard and not collect dirt, but still be flexible as so many joints require, like the factory caulk?

Any and all advice and experiences welcome.
Joe

[xc-mark]

I would guess the caulking has mold on it , or it never cured. I would get some GE kitchen / bath caulking and make sure its clean and dry and above 50* for 24 hrs before putting it on again. I did around some windows last fall with silicone / latex blend , it rained out about 5 hrs after ..... !@#$%^&* it ran like paint!

[Dreamweaver]

Joe I would use Dicor Lap Seal.I have used it for everything and always carry a tube or two in the RV.It's expensive($8 and change a tube)sticks to any surface and stays looking good.
John