Gritty Paint???

[H3PO]

Just washed the H3 and ran my hand over the hood area afterwards. The finish felt gritty as if it had sand on it. I'm wondering if anyone knows what this is and what causes it? Cold it be acid rain causing it?? I quickly put the clay bar to use and had the finish feeling baby smooth in no time. After clay baring I put a coat of fresh wax on it. Would be nice to have a garage to park her in but I'm not that fortunate right now. At any rate I am curious if any of you guys have experienced this and what you have done different. When I purchased the H3 the stealership wanted to sell me a paint coating that supposedly prevented build-up and acid rain damage. Any truth to that stuff??

Thanks,

Chris