First off...
6 quarts of oil should NOT cause a leak since the oil requirements are 5.8 Quarts by the FORD Manual,
and 6.3 quarts by ROUSCH RACING's recommendations.
Second,
A Ford Rebuilt engine will NOT reduce the value of your car.
If anything it will INCREASE or SUSTAIN the car's value
over replacing the engine with a used Junkyard engine.
The FORD Reman Engine is built to tighter specs than the original engine.
It also comes with a 3yr/36,000 mile Warranty.
If you have enough receipts to show that you purchased at least enough oil to cover your engine oil changes
for every 3,000 miles between 10,000 and 22,000 miles, your engine should be covered under the 3/36 warranty.
Fluids, are NOT covered, so you will have to pay for something.
I would also pick up a water pump with a METAL impellar and have it installed with the new motor.
Just MAKE SURE you are getting an SVT Short Block and not the Duratec 2.5 Short Block.
You can confirm the Short lock part number with Bill Jenkins or Big Jim.
Pete...
98.5 SE Sport Duratec ATX (P66L) Black Clearcoat on Greystone
DOB 11/21/1997
DOP 12/25/1997
PIAA 510 Super White Driving Lights
SVT CAT-BACK EXHAUST (No Resonator)
DiabloSport Chip (LPQ4) - Engineered To Raise Hell
Too many other mods to list...
Sounds sweet, runs quick...
Crazy Horse Dyno @ 121.4 WHP/129.6 TQ