2008 Dodge Avenger Owner's Manual - Page 274

272 STARTING AND OPERATING conditions, using the "5" range will improve performance and extend transaxle life by reducing excessive shifting and heat build-up. OVERDRIVE- 4 Speed Transaxle This range should be used for most city and highway driving, it provides the smoothest upshifts, downshifts, and best fuel economy. However, select the "3" DRIVE range when frequent transaxle shifting occurs while using the OVERDRIVE range, such as when operating the vehicle under heavy loading conditions, (i.e. in hilly terrain, traveling into strong head winds or while towing heavy trailers). Under these conditions, using the "3" DRIVE range will improve performance and extend transaxle life by reducing excessive shifting and heat build-up. DRIVE - 4 Speed Transaxle This range eliminates shifts into OVERDRIVE. The transaxle will operate normally in First, Second, and Third while in this range. The "3" DRIVE range should also be used when descending steep grades to prevent brake system distress. NOTE: Using the "3" DRIVE range while operating the vehicle under heavy operating conditions will improve performance and extend transaxle life by reducing excessive shifting and heat build up. LOW - 4 Speed Transaxle This range should be used for engine braking when descending very steep grades. In this range, upshifts will occur only to prevent engine overspeed while downshifts occur earlier than other gear range selections.