Ford 7.3L Gas v8 Engine Problems, MPG, Oil Capacity/Type

The Ford 7.3 gas v8 engine is new for 2020.

There have been a few problems like:

  • spark plug wires misfires
  • stuck lifters
  • knocking and power loss
  • poor mileage


The engine gets 8 mpg city and 12 mpg hwy.


It uses 8 quarts of 5w-30 oil

tools needed for drain plug: 15mm wrench

Ford recommends changing the oil every 10k miles.

The engine aka Godzilla is used in Ford f250 – f750. It replaced the 6.8 Triton v10.


size 7.3L, 444.9 cu. in.
cylinder bore and stroke 4.22in, 3.976in
Cast iron block
Aluminum heads
10.5:1 compression
430hp @ 5,500rpm
475lb-ft. @ 4,000rpm

Engine picture:

Video clip discussing good, bad, and mpg

Compare f150, f250, f350 and f450 superduty trucks towing capacity.