FORD F150 PICKUP 13 3.5L (turbo), (VIN T, 8th digit). FORD F150 PICKUP 14 3.5L (turbo), (VIN T, 8th digit), thru 12/15/13. Turbo Unit. Engine oil and filter MUST be changed at the first 1,000 miles and every 3,000 miles thereafter (service records must be kept).