sandog
Well-Known Member
I have been using the 400 as much as the 910. The only difference being the 400 is slightly longer with more capacity.
Also the FL400 filters 80% of the particles 20 microns or larger, whereas the FL910 filters 50% of the particles 35 microns or larger.
So the 400 seems to filter junk out of the oil better.
Source of specs was taken from a Bob the oil guy discussion on the 400 vs. 910.
The 510 that the OP mentioned ? I'm not even sure what the application for that one is.
I looked at several Motorcraft application charts and could find no FL-510s (or the FL-400s either)
The closest number was an FL-500.
Also the FL400 filters 80% of the particles 20 microns or larger, whereas the FL910 filters 50% of the particles 35 microns or larger.
So the 400 seems to filter junk out of the oil better.
Source of specs was taken from a Bob the oil guy discussion on the 400 vs. 910.
The 510 that the OP mentioned ? I'm not even sure what the application for that one is.
I looked at several Motorcraft application charts and could find no FL-510s (or the FL-400s either)
The closest number was an FL-500.
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