I know that occasionally you should put some oil on your razors to prevent rust and keep them in good shape. As I am new to this, I'm loathe to spend more on razor oil and shipping and whatnot. I was cleaning out my bathroom drawers today and found a small bottle of shaving oil. I got it at shoppers and it apparently can be used instead of shaving cream. Anyways, I don't use it and the ingredients have some oil, other stuff and menthol. Would I be able to use it on my straights to prevent rust or will these kinds of oils cause damage?

Thanks