nklr: concrete sealer for garage floor?

[RM]

Sorry for the off-topic post, but I know there are some garage gurus on this list.. I rent. I would like to protect the landlord's concrete garage floor from all the nasty motorcycle fluids that I'll be working with over the next year. I don't want to paint it. I want something less obvious that I won't have to worry about when I move. Any suggestions for a clear concrete sealer? I noticed several products at the hardware store. Any experiences? RM