351 Windsor (5.8L):
* 5 quarts (4.7 liters) with filter change
* 5.5 quarts (5.2 liters) for initial fill (dry engine).
351 Cleveland (5.8L):
* 6 quarts (5.7 liters) with filter change
* 6.5 quarts (6.2 liters) for initial fill (dry engine).
351 Modified (351M or 400, 6.6L):
* 6 quarts (5.7 liters) with filter change
* 6.5 quarts (6.2 liters) for initial fill (dry engine).
It's always best to refer to the vehicle's owner's manual or reliable automotive resources to ensure you're filling the correct amount of oil for your specific Ford 351 engine.
