1985 Toyota Pickup White Exhaust, leaking oil and water

My 1985 Toyota Pick-Up has been sounding like a lawn mower the last couple of days and feeling like it might stall. This morning, white exhaust started coming out from the tail pipe and when I got it home it was leaking what looked like water and oil, but not 100% on that. It was coming from the bottom of the engine.

It was my Father In-Laws truck that he gave me when he passed, so it's got some emotional attachment, but it's also 23 years old. I would like to fix it, but would like to know what it could be before I do so.

Thanks.