Interesting I suppose it could be. I'm not sure where I'd be picking that up. My mind went to suspension or something maybe being over greased from the factory but I couldn't find anything.Thats road tar from the roads you're driving on
I gotcha I'm leaning towards something probably from the roads, however there is a fair amount in the fender wells as well but I didn't take a picture of itIf it was axle grease, I would expect it to be more wide and splattered. And it would be more in your fender wells, rather than on the outside edges. What you're seeing is almost surely slinging up from the roadway.
Check your rubber axle boots. Unless you see excess grease there (and a tear in them) then it’s probably from the road. Is this just at one fender, or all of them?I gotcha I'm leaning towards something probably from the roads, however there is a fair amount in the fender wells as well but I didn't take a picture of it