The leaking oil seal at the rear end of the crankshaft will get worse. Oil is leaking out of it. Oil lubricates your engine. When all the oil runs out, the engine parts will rub together and your engine will stop working. Once the seal starts to go, it will quickly get worse. Your engine will start losing oil faster. Please do not be blocking the road when your engine freezes up.
Of course it costs a lot less to get the oil seal replaced than to replace an entire engine. I did it myself years ago. (At the time I was out of work, had very little money, but a whole lot of time.) It is easy to do but a whole lot of stuff must be removed before you can get to it. That is what takes the time. I recommend taking it to a mechanic who does that work every day. He can do in an hour what took me 2 days.
You can tell your rear engine is leaking by looking under your rear engine and see if there's drops hitting the ground.
You'll see either fluid or grease leaking out of it.
your main oil seal on the rear of engine is leaking or the timing cover seal is leaking,
It is not the brakes leaking oil , Its the axel seals leaking rear end gear oil. If its not gear oil , Then its brake fluid and that means wheel cylinders are leaking.
NO!!
rear freeze plugs
it is usually the rear brake cylinder that's leaking and needs to be replace on that side.
Rear main engine seal or front transmission seals
Water can not leak from the rear main seal, only oil. Most likely there is a leaking freeze plug near the rear main seal dripping water onto it.
NO. You either have a rear main oil seal leaking or the back of the intake leaking oil and even could be a valve cover gasket leaking. But I would say the rear main is leaking and when the engine is running the flywheel slings oil onto the starter.
The rear cabin heater uses coolant lines that run to a heat exchanger in the rear.
First you have to identify the fluid that is leaking then locate the source of the leak before we can tell you how to repair it.