I used a Motor Guard toilet paper oil filter on my 1956 VW for years. I never changed the oil. I just replaced the toilet paper every 5,000 miles and added a quart of oil to replace what the filter had absorbed.
Motor Guard was bought by another firm, which switched to air filtration. But the old canister is the same.
You can buy one for $110. If this sale ends, just search for "Motor Guard" and "filter."
I found a site which described how to modify the Motor Guard canister for oil use. If you are handy with tools or know someone who is, this will let you make the conversion.
Only someone like me would bring back the Motor Guard submicronic bypass filter as a lube oil filter when Motor Guard gave up on selling lube oil filters 25 years ago. Motor Guard has found happiness in making the very best compressed air filters available. I was a dealer when all they had was lube oil and fuel filters. The name didn't come from compressed air filters. I'm not profit motivated. If I break even at the end of the year it's been a good year. Big companies like Mc Master-Carr can get a better price than I can.
For lube oil or fuel I must remove the polypropylene seals and install CNC machined Dupont Delrin seals. They are known as cores. T.P. needs longer cores to support the T.P. core to keep the oil pressure from collapsing the T.P. core. I install a CNC machined aluminum hold down and a 7/16" locking shaft collar. Then I add shipping to the price of the filter.
Motor Guard has always made die cast aluminum filters. I can sell the Gulf Coast 0-1 jr for less because it is ready to go. I'll put the price back on my website. The 0-1 jr is the easiest to sell because the Military buys a lot of them. The Motor Guard is the easiest to service but if you are going to put it in a horizontal position it doesn't matter. The filters don't care what position you put them in.
My sister in law has a Frantz in a horizontal position for the ATF and a Motor Guard tilted for the lube oil. I removed the big windshield washer tank to make room for it. I replaced the tank with a smaller tank. It was a lot easier in the 60's.
I'm converting to the Motor Guard's at work and my personal equipment. My 59 model Frantz I will keep for sentmental reasons. The rest I will sell. I just pulled a perfectly good Frantz off my tractor transmission and installed a Motor Guard M-30. The Frantz filters paid for themselves many years ago. Your engine doesn't care which of the submicronic filters you use. The 25.00 elements work just as good as T.P. if they can filter to 1/10 th of one micron on the first pass. If you don't change the filters as often as you need to the engine won't last as long. You might get a compressed air filter and drive a sleeve down on the stock cores to keep the slick oil from letting the cores slip off the seats. Add 1/4" to 1/8" bushings and a 1/16 orifice. I don't see much reason for me to sell two different kinds of little filters but it might be good to give people a less expensive choice.
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He started selling them. Then he quit.
Now they are back again.
I wish he had produced a YouTube video on how to make the conversion. Maybe you can, if you're an auto mechanic.
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