Pick up my new hold over 2019 Tracer 900 G.T. Rode it home 50 miles and noticed in sight glass oil was black. Drained oil in New pan and thankfully found no visible metal flakes. Noticed very little play on clutch lever. Turned it in 1/2 -turn to get some free play.Changed oil filter and replaced oil with Yamalube 10/40. Rode it 22 miles and oil in sight glaas looks great. Any ideas why oil would be black.