Yes
yes you can use synthetic oil if you want to
Regular oil is recommended by Jeep. Edit: Correct, Jeep does not make a recomendation to use synthetic oil. However synthetic oil will not hurt the engine at all. The recommended weight is 5w30.
5W-30 Synthetic Oil.
You would use the same oil filter for both synthetic an d regular oil in your jeep.
Yes.
No
You can use conventions, synthetic blend, or 100% synthetic, your choice.
Of course, synthetic oil is a better choice of oil in all vehicles.
The 2001 specifies Mobil 1 Synthetic 5w30. Any brand of synthetic oil would be fine.
No. Conventional oil is acceptable.
10w30 or 5w30 conventional , synthetic blend, or full synthetic will do
The 4.0 2001 Jeep Wrangler needs 6 quarts of oil for an oil change.