See also:

Materials Added To Engine Oil
Do not add any supplemental additives, other than leak detection dyes, to your engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives. ...

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 ...

Lane Change Assist
Tap the lever up or down once, without moving beyond the detent, and the turn signal (right or left) will flash three times then automatically turn off. ...