Oil capacity? 91' explorer

[apeder]

I would like to change the oil on a friends 91' explorer but I am not sure how much oil the engine takes. Its a 4.0L engine. I am unable to find the owners manuel to check the specs. Any reply would save me some time, and is greatly appriciated!

[XLT03]

5qts., Put in four start engine, check dipstick and if low add the 5th quart.

[apeder]

Thanks- that should save me some time and worries!