Whats wrong with my engine?

[BrokenPathfinder]

I've been having some problems with my 2001 Nissan Pathfinder over the past winter, heres the breakdown.

One day went and filled up my tank with gas (which hasn't happened in a long time due to gas prices and im a broke @ss student) then drove to a grocery store, spent a few minutes in grocery store, then when i tried to start my truck the battery was frozen. I took my battery out of my truck, brought it in my house for the day, brought it back to my truck, put it back in and it started, however i had a C.E.L. I drove home and figured it worry about it a little later.

So, my truck hasn't started since this day, today i was checking it over, and there was almost no oil in my engine (I know i should of checked it more regularly )

Can anyone tell me whats going on?

Is my engine now just a bunch of scrap metal?

EDIT:

I guess i should add that my engine still cranks, it just won't turn over.

[SteveTheTech]

Hi there and Welcome to Nico

Your description is a little vague, I understand your predicament but after allowing a vehicle to sit for an extended period of time especially given your extreme climate. There could be any number of things wrong with your car, from sludged oil to a dead or discharged battery to any combination of sensor issues. My advise is to get it looked at professionally and assess it's personal value once you know what is wrong with it.

Good Luck.

[Vegascorbin]

Plan BMove someplace where you don't have to worry about your battery frezeeing. Dang thats cold!