Perhaps you washed these areas after winter or just washed them regularly?Just a lot of oily gritty mess. Not sure if that’s bad or a feature. I have Krowned multiple cars, some professionally, some myself. They don’t get that messy…
Krown or whatever other oil based product will attract dirt, there is really now way around it besides washing it off from the visible areas after winter.
But if you let it sit, it will get messy.