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Originally Posted by Jake Raby
I consider a cartridge type filter totally acceptable for my 1949 Ford Tractor, (which came with a cartridge filter) but not a modern Porsche engine..
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Jake,
When I was a technician on all sorts of British cars back in the day, they all used a cartridge filter. Trouble was there was a metal disc in the bottom of the filter canister and a spring to push it against the bottom of the cartridge.
If an owner or an independent shop didn't know that disc was there, it got thrown away with the dirty cartridge. Then when a new one was fitted without that disc, oil filled the canister but never was forced THROUGH the filter! It just bypassed the filter entirely. Talk about full flow.. lol.
I can't tell you how many of those I saw come in with that critical disc missing.
Only near the end of importation of British cars did they finally adopt a spin on filter.
J T