Most People do not know that they have two. You are a head of the game. the primary filter is on the inside of the frame rail on the driver side. I use a long long ext. on my ratchet with a fuel filter socket. 36MM. they make thies for 10.00 to 15.00 at the local parts stores lisle i is one maker. the reason i use a 30in ext is to keep from taking a bath in diesel. after replacing the filter start truck let run a min or so. the secondary filter is in the top front of engine smaller cap with place for 1/2 in ratchet and short ext. to remove and replace. start truck let run. if truck starts and dies it got a little air just keep trying to start and it will. USE MOTOERCRAFT FILTER'S ON THIS ENGINE OTHER FILTER COMPANYS COPY AND IS NOT THE SAME. CAN LEAD TO POSSIBLE ENGINE DAMAGE.
Gas or diesel?
In my 1986 F350, I replaced a the 6.9 diesel engine with a 1989 7.3 diesel engine. Everything fit. BUT I had to used the glow plug system from the 6.9 system
The 2004 Ford F-250 - 6.0 liter diesel supplement shows : 15 quarts ( 14.2 liters ) WITH OIL FILTER CHANGE note : The Ford Motorcraft oil filter holds 1 quart ( 1 liter )
10 1/2 qts. w/filter
According to the 2000 Ford F-250 , 7.3 liter diesel supplement : With engine oil filter change : ( 15.0 U.S. quarts )
I'm not a mechanic / technician but according to www . ford parts . com ( no spaces ) For a 1994 Ford F-250 with the 7.3 liter diesel ( NON-DI TURBO ) It takes the ( Motorcraft FD-3375 diesel fuel filter )
According to the 2002 Ford F-350 , 7.3 liter Diesel Supplement : ( the Motorcraft FL-1995 engine oil filter is used )
15 quarts of oil are generally oil and filter. its 15W40 diesel oil
According to one of the Ford websites : For a 1989 Ford F-250 , 7.3 liter diesel engine : The ( Motorcraft FL-784 ) engine oil filter is used
15 quarts ( 14.2 liters ) WITH OIL FILTER CHANGE for the 6.0 L diesel Note : The Ford Motorcraft oil filter holds 1 quart ( 1 liter ) According to the 6.0 L diesel supplement for a 2004 Ford F-250
drain the fluid out of the transmission pan, unbolt the pan, remove the filter and replace
For a 1991 Ford F-250 , 7.3 liter Diesel V8 engine : With engine oil filter change : The Autozone website shows ( 9.8 U.S. quarts )