2000 Ford F-250 Tune up

Drain the tank down low then park it somewhere, use another vehicle to bring fresh gas about 10 gallons and 2 bottles of seafoam or equivelent cleaner.

Next go under vehicle replace fuel filter, then you can add in your fresh fuel and one bottle of seafoam.

Next step would be pop the hood change the oil filter and check the ohm resistance of each spark plug wire, compare to specs. Or if they havent been replaced yet replace them and the spark plugs.

After that is over with change the air filter.

Take vehicle out for a 20 minute romp, with engine running check the transmission fluid, oil level, power steering fluid level and top off as needed.

Then you can use the second bottle of seafoam, use seafoam nothing else. Wiht vehicle running add about 1/3 of a can to a vaccum line, maybe off of the heated air intake damper or equivelnt vaccum line. Then quickly shut off vehicle.

Let sit 5 mins, restart. Shell run rough and smelly for a bit.

When it clears up you should be good to go.