2008 Subaru Tribeca Owner's Manual - Page 339

Maintenance and service 11-17 Front differential gear oil & Checking the oil level & Recommended grade and viscosity Each oil manufacturer has its own base oils and additives. Never use different brands together. Oil grade: API classification GL-5 1) 2) 1) Yellow handle Upper level Lower level 1. Park the vehicle on a level surface and stop the engine. 2. Pull out the dipstick, wipe it clean, and insert it again. 3. Pull out the dipstick again and check the oil level on it. If it is below the lower level, add oil to bring the level up to the upper level. CAUTION Be careful not to spill front differential gear oil when adding it. If oil touches the exhaust pipe, it may cause a bad smell, smoke, and/or a fire. If oil gets on the exhaust pipe, be sure to wipe it off. SAE viscosity No. and applicable temperature