Gaz,
If you mean the Race Deck flooring mine is easy to clean. I have spilled
oil, gas, and about everything I could manage to drop on it and I just take a rag and wipe the biggest part up then use some 409 and another rag and it comes right up. My floor is about 14 years old so it doesn't have the high shine it used to any more but that is from wear and use more than the spills.
As for casters for my jacks I have looked everywhere up here for some large ones that I could make work and had no luck at all. I wish they had some that were about 6/8 inches in diameter and were pneumatic and I think they would work OK on this darn diamond plate finish.
Ron