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Old 07-12-2004, 12:13 PM
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Frantz toilet paper filter update

Got bored today and decided to do my first change on the Frantz toilet paper oil filter. I'ts a little early, i'm supposed to go 3000 miles per roll, but was curious how things were doing. This change is at 1322 miles and I wanted to see if there was any metal comming off my new engine. Not a speck!!
I'm also running Amsoil 10W-30 synthetic. Here is a picture of the oil samples today. I"m impressed!

The scraping off the inlet side of the TP filter is pretty nasty, and I"m running a Napa Gold long GM filter on the engine too. The TP filter really seems to be getting a lot of the small crap that the regular spin on cannot filter out.


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My dad told me about his first toilet paper oil filters on Ford 4-bangers in the 20s. Of course, back then oil filters were not standard from the factory so they had to improvise. Have seen those one page, miracle product ads for them pop up in Popular Mechanics, Science & Mechanics., etc., all my life. This technology is going on 100 years old. I would be very concerned with pressure drop through the filter. Is oil bypassing it to maintain system pressure? Also, there is likely some paper fibers leaving the TP and entering the oiling system. Don't know if that is a problem or not - haven't studied the lubricity of cellulose recently!! Actually, if you run any modern filter and change your oil religiously every 3000 miles, your engine will live longer than your interest in the car.
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Old 05-01-2011, 10:27 AM
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Frantz Filter

I've been using Frantz Filters since 1975 when I bought my very first one. The engine on our daily driver has 308,000 miles on it. I change the Frantz once a month. It had a valve job at 165,000, but the lower end hasn't been touched. I had an engine rebuilt some time ago and intended to replace it at 300,000, but it's running so well and not burning any oil, so I'm postponing the engine replacement until there's a reason to replace it.

I did something yesterday that I've been meaning to do for a long time. I drilled a hole in the top of the Frantz can and put a high-pressure thumb valve in it. Theoretically now I'll be able to open the valve the night before a filter change so the oil in the filter will drain out (so there will be less mess).
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