Before this big, bad pickup arrived, manufacturers largely used upgraded versions of their light-duty trucks to handle heavy-duty work. The 1999 Super Duty was a separate model line with its own style and hardware underneath.
You can run a conventional oil 5K miles but you should be able to run a synthetic oil 7500 to 10000 miles. Royal Purple API-licensed synthetic engine oils allow motorists to travel as many as 12,000 miles as the recommended oil change interval.
More likely, youâll find that the oil is ready for a change between 6 and 9 months with the standard Mobil 1 synthetic oil. An oil analysis runs about $20 â $25 depending upon who you get it from and how much data you need.