Degreaser, I usually use brake clean or gasoline. I use diesel to get tough sticker/etc petroluem based adhesive goo off containers/etc.
Lubes, there's appropriate grease, motor oil, dry silicone, dielectric grease, silicone paste, rattle can oil, and in a pinch i've been known to mix cartridge grease with oil to achieve the viscosity I want, for example on my garage door slider rails I only need a tablespoon or so of something thinner than NLGI 2 so it doesn't bind up in very cold weather, or for lubing worn fans (that don't have oil reservoirs) , go the opposite direction and add just enough grease to gear oil, to end up around NLGI 000. I don't mix the batch up every time, have a needle applicator bottle, a jug for garage lube, etc.
Automotive though, everything has a specific best type of lube.