Sticking to the oil recommended in your owner's manual is always the best approach. This ensures optimal lubrication and engine performance. If you're unsure what type of oil your Jeep needs, consult the owner's manual or a qualified mechanic. Mixing oils, even if seemingly similar, can potentially lead to slightly reduced performance or, in rare cases, minor issues down the line. The small benefit of using up leftover oil is not usually worth the potential small risk.
