I'll add to this for the hell of it:
Fluids you can find under your car and what you should do if you see them.
- Clear fluid with no odor after parking from driving for more than 10 minutes: that's condensation, you can ignore that, it's coming off your AC system.
- Clear-ish fluid with gasoline odor after parking from driving for more than 10 minutes: if it's by the tail pipe then it means your car is not burning all the gas going through the engine and it's being sent out the exhaust. This can damage your catalytic convertor and hints at other issues, but is not an immediate concern. If you find it anywhere else you need to take it into the shop immediately or you might end up on the news with your car on fire.
- Black fluid in the middle underneath your engine: you have an oil leak. If the puddle is small then it most likely is a gasket or seal, if the puddle is large then you might have a crack somewhere. If it's a small leak then you can limp it along and top off your oil as necessary till you can get enough money together to get it fixed but if it's a large leak you need to get it taken care of as soon as possible.
- Green/Blue/Yellow/Orange fluid found at the front of your car: this is either your windshield wiper fluid or your radiator fluid. Either way you have a leak that needs to be addressed but one of them will be more expensive than the other. To see which one it is check your radiator overflow tank in your engine bay, if the colors don't match up then you're okay for a little bit but you'll still want to get it looked at eventually.
- Milky white fluid at the back and/or front middle: this is differential or "pumpkin" gear oil that's gotten water in it and fouled it up. It means that you have one or more bad seals and need those replaced along with your differential fluid. Get this done as soon as you're able or you will be stranded.
- Red to reddish-brown fluid in the middle-middle of your vehicle: this is transmission fluid, you have a leak there, get this looked at as soon as you're able to. When your transmission runs out of fluid it'll lock up and you'll be stranded.














