They are great conversation pieces install under the hood where it can be easily seen and polish the chrome. the when some rube ask what it is and you tell them its a toiler paper oil filter . the look on their face is priceless. It would be even better in a open engine car.
my uncle sold them in the '70s. had one on his pontiac and never changed the oil--just added some when it needed it. always had clean-looking oil. i've heard that they were no good for high-performance use--very restrictive. also, where do you buy rolls of t.p. that are the same size as was available back then?
Mack trucks when mack used to build there own motors ( not the new renualt design ) they used a full and bypass filter on all there trucks ( 3 filters ) my Cats I had a bypass filter put on them as it only had a full flow filter , at 15 K the oil was a little discolored from the heat but still was clean ( had to change oil to keep the Cat Warantee of 500K ) , my buddy puts bypass filters on all of his construction diesels and the motors last twice as long as other guys who won't spend the initial 200 for the filter assys .
You simply unroll enough from the roll until it fits the canister. Its a bypass there isn't any restriction none . A clogged full flow could become a restriction. A bypass is just what the name implys . it bypasses it don't restrict.
They are deliberately restricted so they don't reduce your car's oil pressure. Since they take a small amount of oil off the oil gallery and dump it back in the crankcase. Inside the filter is a 1/8 hole, and the filter paper itself is restrictive.
guess i wasn't clear on that. i meant that the t.p. rolls today aren't nearly as wide as they once were.
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