as said, how bad is it? I have a few concrete stains and issues on my garage floor, but it is a garage floor, so I don't worry about it.
1994 Honda VT1100C: Peak 15w-40/TG/2500 mile OCI
2002 Ford F150: GTX HM 5w-20/EcoGard Syn/1yr OCI
2012 Scion xB: QSUD 0w-20/CQ Blue/5k OCI