1998 FORD MUSTANG 3.8L 6-cyl Engine Code 4CAPACITIESEngine, with filter..........5.0 quartsWix Oil Filter...............515161998 FORD MUSTANG 4.6L 8-cyl Engine Code XCAPACITIESEngine, with filter..........5.0 quartsWix Oil Filter...............513721998 FORD MUSTANG 4.6L 8-cyl Engine Code V 32-valveCAPACITIESEngine, with filter..........6.0 quartsWix Oil Filter...............51372Hope This Helps.
5 quarts total, 4 in the tank and one in the filter
With engine oil filter change ( 6 quarts ) for the 4.6 liter V8 engine according to the 2010 Ford Mustang Owner Guide
My ( 1991 ) Ford Mustang 5.0 LX came from the factory with ( 5W-30 )
According to the 2006 Ford Mustang Owner Guide : With engine oil filter change : The 4.0 liter SOHC , V6 engine takes : ( 5.0 U.S. quarts / 4.7 liters of 5W-30 )
May just be low on coolant.
Motocraft Oil Filter
Go to AutoZone for a Pic.
my 5.0l is 5 quarts 5w/30
You may find the info you're looking for at: www.veryuseful.com/mustang/tech/engine#Diagrams
The spring side goes INTO the intake manifold.
My 1991 5.0 liter H.O. LX Ford Mustang took ( 5 U.S. quarts of 5W-30 ) with engine oil filter change * don't forget it has ( 2 ) drain plugs in the oil pan because it needs to clear the rack and pinion steering