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Greg Ondayko
PostPosted: Wed Mar 08, 2023 2:32 pm 
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What is the advantage of one over the other?

I have used 51515's for a while now on many of my MoPar stuff. Is 51806 better somehow?


Thank you sages!

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Last edited by Greg Ondayko on Wed Mar 08, 2023 5:39 pm, edited 1 time in total.

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SlantSixDan
PostPosted: Wed Mar 08, 2023 4:18 pm 
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51806 contains a built-in standpipe; 51515 does not. Other than that they are substantially alike.

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Greg Ondayko
PostPosted: Wed Mar 08, 2023 5:42 pm 
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Cool thanks Uncle Dan.

Is the built in standpipe of 51806 somehow better flowing than the stock steel stand pipe and small check valve on the filter base / oil pump?

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Killer6
PostPosted: Wed Mar 08, 2023 8:30 pm 
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I will add that according to the Wix catalog, the oil bypass is set at 22psi in the 806, vs ~9psi for the 515.
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SlantSixDan
PostPosted: Thu Mar 09, 2023 9:49 am 
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Is the built in standpipe of 51806 somehow better flowing than the stock steel stand pipe and small check valve on the filter base / oil pump?
No data; I'd just be guessing.

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Greg Ondayko
PostPosted: Thu Mar 09, 2023 10:23 am 
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Thank you.

I suppose the 51086 is worth a try for me as I just got rid of a standpipe for my latest build and I have a bunch of 51515's to compare it with.

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SlantSixDan
PostPosted: Fri Mar 10, 2023 11:45 am 
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With the 51806 bringing its own standpipe, you could optimise the filter adapter—bore it out and round its inlet and outlet edges to minimise flow restriction.

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Greg Ondayko
PostPosted: Fri Mar 10, 2023 1:34 pm 
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I will likely try that thanks again!

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drgonzo
PostPosted: Fri Mar 10, 2023 3:59 pm 
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I noticed I have a 51515X, says it's for full synthetic oil.

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DadTruck
PostPosted: Sat Mar 11, 2023 7:38 am 
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Any automotive engine oil filter will work with any automotive engine oil.
Better filters have the ability to strain out smaller particles and at the same time have better flow rates and more robust construction. But stating that a specific type of oil filter is required for synthetic engine oil is a stretch.

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Rick Covalt
PostPosted: Sat Mar 11, 2023 10:12 am 
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I would guess that is some kind of marketing gimmick? I have been using both of these filters for years with non synthetic oils.

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