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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

extra large oil filter? ?

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Old Sep 2, 2025 | 04:22 AM
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From: Pinckney Mi.
extra large oil filter? ?

I have done enough test drives around the block here to need a oil change , get rid of break in oil,(rebilt 239,51 M3)
the oil canister is maybe twice as tall as the "standard" canister.
so with new filter in canister,it took almost 3 qts to fill this canister,
with 5 qts in motor,that would be 7.5-8 qts of oil.

so my question is ,are thee above amounts correct???
Its been 7 years almost since I started this project, I know my mind is slipping a bit,buutttt?
Thanks folks.
Greg
 
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Old Sep 2, 2025 | 07:41 AM
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Sounds like you need to figure out what oil system your vehicle has. From my memory, there could be the "standard", "Canadian", and "full flow". Chances are you have the "Canadian" and are looking for an equivalent to the Ford/Mercury C51T-6727-A, but a full flow wouldn't be impossible either.
 
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Old Sep 2, 2025 | 10:02 AM
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Bmoran is correct, you could have either a Canadian bypass filter or a Canadian full-flow filter system. If you look down along the back of the engine, the full-flow has a piece in the lines, the bypass doesn't. A picture would help.

If it is the bypass type, you don't need to pre-fill the filter, it will drain out to about the halfway level.
Canadian full flow NAPA filter number 1021
Canadian tall bypass filter WIX 51503

Canadian full-flow system
Canadian full-flow system



Canadian bypass filter
Canadian bypass filter
 
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Old Sep 2, 2025 | 10:14 AM
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Interesting that the 1021and 51503 cross reference each other but not C51T-6727-A
 
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Old Sep 2, 2025 | 10:31 AM
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so I have the 1 pictured on the used engine, the canister was full when I pulled the cap, do I have too much oil in her? should i fill til dip stick (ha,that be me) reads full and leave the canister full?
I have not started it since oil change,but I want to.
is 7.5- 8 quarts of oil what this system wants?
as far as pictures, I WISH I COULD Post pics, I got lost when the did away with carburators, have not been able to find my way back.
I would have absolutly enjoyed sharing my build wit you folk, i can text pics, my grandkids seen to that..
Thanks
Greg
 
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Old Sep 2, 2025 | 12:09 PM
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Originally Posted by bmoran4
Interesting that the 1021and 51503 cross reference each other but not C51T-6727-A
That is strange; I took those p/n's off a thread on Ford Barn, so something could be amiss. A full flow filter should be very different media than a bypass filter, roughly 90% vs 99%, and the full flow needs to have less flow resistance.

fish pond, did you look down behind your filter for the valve?

If your filter housing is still full (not 1/2 full) after pulling the element, the outlet orifice in the center standpipe may be plugged. On the US engines with a bypass type filter, no extra oil is added to account for the filter, I would assume the Canadian type is the same.
 
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Old Sep 3, 2025 | 04:05 AM
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There is no valve, I have the filter pictured on the real engine above,not the drawing, when I pulled the old filter out of the canister, the oil level in the canister went to aboot 1/2 full, i drained the rest with canister drain plug.
I inspected the stand pipe in the canister, made sure drain hole in the stand pipe was free of debri , installed filter in canister. poured almost 3 quarts of oil on top of new filter,till it was full.installed canister top/cap, then proceeded to pour oil into oil pan until dip stick was happy. None of the part numbers mentioned above match the Advance auto part number I installed.
I will run it and find out.
My block has the heated head bolt as picture above as well, its on pass. side though.
I will be back to post my results,incase the question comes up again.
Thanks
Greg
 
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Old Sep 3, 2025 | 05:05 AM
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[QUOTE=fish pond;21650194]so I have the 1 pictured on the used engine, the canister was full when I pulled the cap, do I have too much oil in her? should i fill til dip stick (ha,that be me) reads full and leave the canister full?
I have not started it since oil change,but I want to.
is 7.5- 8 quarts of oil what this system wants?
as far as pictures, I WISH I COULD Post pics, I got lost when the did away with carburators, have not been able to find my way back.
I would have absolutly enjoyed sharing my build wit you folk, i can text pics, my grandkids seen to that..
Thanks
Greg[/QUOTE)
you can post photos, at the top of your post you wish to add to look at the shaded area. 11 or 12 to the right you will see what looks like a photo of a landscape. click from there follow the instructions then click upload at the top right ,bingo
 
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Old Sep 3, 2025 | 06:19 AM
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Using the wrong/short filter may mean you are not filtering at all which is not ideal, especially as your engine is breaking in after rebuild. After wracking my brain looking through things, I think you may want to check out one of these, but this is not very straightforward as many sources don't explicitly support the Canadian variants:

CARQUEST 85021
Donaldson P550117 - Efficiency 99% - 20 MICRON
HASTINGS LF103
 
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Old Sep 3, 2025 | 10:15 AM
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Adding oil to the new filter to the top of the canister should cause oil to start draining down to the pan until it gets down to the hole in the standpipe. (It would take a while) If you then topped up until the dipstick showed full, you should be in good shape. Run it a few minutes and check the dipstick after it settles out.

The WIX 51503 shows to be a 10 micron filter 8-1/16" tall, sure sounds like the correct filter element for a bypass system.
 
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Old Sep 4, 2025 | 03:16 AM
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From: Pinckney Mi.
The filter element I used is the carquest # mentioned above, carquest here in my town is now advance auto,still uses the carquest #s.
So i drove around the barn a couple times, checked oil level,all good, will check oil level today after it sitting overnight.
so far,at least 7 qts of oil is what she swallowed. time L tell.
thanks...
 
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