It depends on outside temperature. The recommended oil by the manufacturer is 5w30. You can probably use 10w30 also. I always use 5w30 myself. Check your owner's manual. Also if you use regular and not synthetic oil, change the oil and oil filter every 3 months or 3,000 miles. Almost all vehicles use Schedule B.
5w30
The type of oil that should be used in a 2005 Jeep Liberty is 5W30. You can switch to 10W30 in the warmer months.
5w305w30
You can use conventional or synthetic any major brand first oil change. Change the oil at the mileage specified in your owners manual.
Any name brand 5W30 Any name brand 5W30
5w305w30
Yes, you can.
5w30
You can use any kind of 10w-40 oil for a nighthawk
Baby oil
Most use Synthetic Oil.
Rocket oil