I have a NHt1110 I use to plow snow with. I have been seeing pink colored spots in tire tracks where I have plowed. Happened last year when new, and I am seeing it again this winter. No red/pink fluids in the machine. Is this something coming off tires? Anyone else ever had something like this happen? I haven't asked dealer about it. 109 hrs on machine. My brother-in- law saw it last year and said I had a hydro leak. But as I said ,no fluid in tractor is this color. Tractor has a fel on it that I'm moving the snow with.