...but in actuality, would a reader with experience mind telling me the down-side of the
original design?

Bob Little
67 Duetto with Hurlock-brand spin-on assembly that actually works perfectly

Bob,
My experience only goes back to 1970. The original canisters (750/101/105) in my opinion, are a good design still used on many cars, however, the problem was/is the difficulty in getting the correct gasket and getting that gasket to seat properly and stay in place. While under the car, pushing up on the canister to start the bolt, the gasket would slip a bit and get pinched causing your (my?) Castrol "R" to leak on your future father-in-law's garage floor. . . ahem. Ever try to clean up that Castor oil? Anyway. . .

Setting the gasket with some grease to hold it in place was the trick for me. The correct sized gaskets (actually square cross section o- ring) seemed to disappear sometime in the '70's so using the same one over and over worked for a while. There are at least three different canister sizes, so the filters, which fit them all, would come with one, two or three gaskets, sometimes none being correct. Les Hurlock began making his spin-on adapters which were/are a good solution. There are many spin-on filter options and there is scientific data available on the quality of the filtration of many of those filters, haven't seen any data on the canister filter inserts to compare those data to.

By coincidence, yesterday, on our South Shore (Boston) Beach and Waterfront tour, (Alfa Owners of New England) we were joined by a member in a Lancia Flaminia. The first stop on the tour, the Lancia was out of commission due to. . . a leaking oil filter canister gasket! Trying to "mark it's spot" in Alfa territory I guess ;)

Baldwin makes a long, spin-on filter (B295) about the same size as the original canister, that can be painted to match the original canister color if one is so anal (I certainly am not) I like the red color. Baldwin also makes the drop-in original canister filters, FYI.

Hope that was not too much information!

Ciao a tutti,
Tom Lesko
Hingham, MA usa
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