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Oil filter???

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Old Apr 30, 2023 | 07:17 PM
  #1  
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Oil filter???

I’ve got a 1994 f150 with the 5.8 Windsor that’s just been rebuilt. It’s new to me so this is my first oil change and I was wanting to put all motorcraft in it. So I bought the fl820s because that’s what I read oil filter is for that motor only to find out that it is too big and won’t screw on. After running all over I finally found out what filter would cross reference the old motor guard. It was a fl910s. Why would it take that filter when everything I see says it should take the 820s???
 
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Old Apr 30, 2023 | 10:49 PM
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If the oil cooler has been removed, then you will likely need an FL-1A.
 
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Old Apr 30, 2023 | 10:50 PM
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Is this mounted directly to the side of the block, or a remote cooler somewhere? If it goes on the side of the block, any adapters that I am aware of are 3/4"-16 UNF, which mates up with the FL-1A, FL-300, FL-400S, and FL-910S. The FL-820S uses 22mmx1.5mm threads, which, AFAIK, were never used on adapters in 5.8 blocks, only in remote cooler sandwiches.

FWIW, the 910s nor any of its aftermarket equivalents were never listed for F-series applications- the gasket is a slightly different diameter than what the header is designed to work with. It's only there because it's all the previous owner had that would screw on. It should have an FL-1A (Wix 51515) if there's room or an FL-300 (Wix 51348) if there's not. Mopar 090 is virtually identical to the FL-300 if you're in a pinch and one is available.
 
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Old May 1, 2023 | 09:13 AM
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My suppliers catalog mentions the FL820S is the correct one for many larger Ford engines. Including mine [95 F250/5.8L].

It also specs the FL910S for the small/newer 4 cylinder engines.

 
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Old May 1, 2023 | 09:51 AM
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Originally Posted by solanum
Is this mounted directly to the side of the block, or a remote cooler somewhere? If it goes on the side of the block, any adapters that I am aware of are 3/4"-16 UNF, which mates up with the FL-1A, FL-300, FL-400S, and FL-910S. The FL-820S uses 22mmx1.5mm threads, which, AFAIK, were never used on adapters in 5.8 blocks, only in remote cooler sandwiches.

FWIW, the 910s nor any of its aftermarket equivalents were never listed for F-series applications- the gasket is a slightly different diameter than what the header is designed to work with. It's only there because it's all the previous owner had that would screw on. It should have an FL-1A (Wix 51515) if there's room or an FL-300 (Wix 51348) if there's not. Mopar 090 is virtually identical to the FL-300 if you're in a pinch and one is available.
It is on the side of the block right below the power steering resevoir. So do they still sell the fl1A or did they get rid of it? And why would every system say that I should have an 820s. I was wanting to stay with motorcraft is the reason I got the 910s
 
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Old May 1, 2023 | 09:58 AM
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FL1A filter is readily available here in VA.
 
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Old May 1, 2023 | 10:06 AM
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Factory heat exchanger for the engine oil? Is it missing? Some people remove them.
 
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Old May 1, 2023 | 01:57 PM
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Originally Posted by Blurry94
If the oil cooler has been removed, then you will likely need an FL-1A.
And that filter is pulling up only for mustangs. Is it still good for the F-series?
 
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Old May 1, 2023 | 06:55 PM
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Been using one (FL1A) on my 351W for years.
 
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Old May 1, 2023 | 08:03 PM
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..............
 
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Old May 1, 2023 | 09:14 PM
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I use the FL820s on my crown vics (2006-2008)
Later vics use the 910.

My 90 5.0 F-150 takes the FL-1A (as does my 63 Galaxie with 390 and 63 Dodge dart with a slant 6)
 
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Old May 1, 2023 | 09:35 PM
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Even a Fram PH8A is fine. Clean oil with fresh filter beats nothing.

Did you know IH SV series V8s (and four poppers) use the same?
 
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Old May 2, 2023 | 09:40 PM
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Update: the FL1A worked perfectly and definitely was more like the size I was expecting for a motor that big. That's what I'll be using from here on out
 
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Old May 3, 2023 | 08:15 AM
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Did you ever mention if you are using the factory oil cooler?

It certainly would help those to know that in the future.
 
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Old May 3, 2023 | 08:55 AM
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Factory oil cooler on a 5.8L: use motorcraft FL820S
Factory oil cooler removed on a 5.8L: use Motorcraft FL1-A.
​​​​​
 
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