"T" - Towing A Trailer or Using A Camper or Car-Top Carrier
Every 3,000 miles or 3 months - Change engine oil and replace oilfilter.
Every 30,000 miles - Change automatic transmission fluid.
- Lubricate 4X4 front hub needle bearings (F Super Duty)
Every 60,000 miles - Change transfer case fluid.
As required - Change manual transmission fluid.
As required - Inspect and lubricate U-joints.