I have a 99 4.5 dual fuel in auto, about 250ks on the clock.

I am wanting to do an oil change for the auto.

Is it as simple as dropping the oil, changing the filter and filling it back up?

If so what's the best oil and filter for an auto that's getting on a bit?

Also does it have a set amount of oil (same as engine oil) or just fill until the reservoir is full?

Thanks in advance
Lachlan