See also:

Tire Chains
Tire chains may be installed on all models except the Sahara and Rubicon. Install chains on rear tires only. Follow these recommendations to guard against damage and excessive tire and chain wear ...

Engine Oil Viscosity – 3.6L Engine
SAE 5W-30 engine oil is recommended for all operating temperatures. This engine oil improves low temperature starting and vehicle fuel economy. The engine oil filler cap also shows the recommende ...

Treadwear
The Treadwear grade is a comparative rating, based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 woul ...