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Paul C in Orange County CA on January 25, 2012 at 05:04 PM said:

Hello, I recently purchased a 2005 GMC Yukon Denali with a 6.0L V8 engine. The vehicle has ~80000 miles on it, it runs great, and I want to keep it that way. I recently took our other car in for an oil change and I noticed that the price of a simple oil change had gone way up to over $50. I remembered running across "bypass oil filters" on the web a while back (starting on the AMSOIL site) and I have researched several vendor's products. In the end I chose a Frantz filter because it was reasonably priced and the filter elements (toilet paper) is very inexpensive. I must admit that I wondered if such a filter element could really work as advertised.

On JAN-22 I spent the afternoon installing the Frantz filter under the hood of my Yukon and I plumbed in the oil feed using the Frantz "sandwich adapter". Installing the sandwich adapter was fairly simple. At time of installation I had about 2000 miles on my engine oil. When I pulled off my "full-flow" oil filter my oil was fairly dark. I purposely did not change my oil or the full-flow filter because I wanted to give the new Frantz bypass oil filter a test. After 1 day of driving with the bypass oil filter installed (about 50 miles) I stopped for gas and checked my oil. My oil is now clean and largely clear. I am convinced that it cleans the oil as advertised.

One other concern I had was oil pressure reduction. My oil pressure at idle was originally ~40psi; now it is ~38psi. Off-idle I see no change to oil pressure at ~44psi (likely limited by a pressure regulator).

I hope this is helpful to others ...

Bill T on January 21, 2012 at 08:06 AM said:

I bought my first Frantz in 1967 from a Los Angeles dealer and used it on 3 successive cars: '68 Volvo, 72 Toyota, and '75 Opel which I sold with the filter when I lived in Minneapolis.

What a great filter! At first I was surprised by the tiny metal flakes on top of the filter when I changed the TP roll. When I had the Volvo engine overhauled the mechanic could not believe how clean the inside of the engine was after 120,000 miles. Made him a believer, too.

For years I could not find a local Frantz dealer, but thanks to the internet I found it again and will use it on my cars.

Keith Frantz, grandson of John Frantz, Inventor on January 15, 2012 at 09:07 PM said:

Hello.....

This is such a interesting sight!!!! I echo the words of my Uncle Dale in his post by saying how much my Grandfather would have smiled to know that his beloved filter is still alive and people are still talking about it! I am Keith Frantz, John Frantz's grandson. I live here in Hickman still, two houses down from Grandma Daisy..... Johns wife. Perhaps the only thing that would make his face light up more that filter discussion was discussion of his Lord who he went to be with in 2003. I can remember many hours spent in his shop helping him assemble, pack and ship his filters. We have several units floating around the farm but my most prized filter is one that he gave me as payment for a days worth of work. It is soon to be installed on my 1964 Nova.
It is so fun to see this still alive and well...... I am even eyeing one of these polished kits for sale!!!! Most of ours look terrible from being under hoods all these years!
Thank you to all the kind people who have wrote in over time and spoke highly of the filter, it means a lot to us family as we look back and smile to the accomplishments and memory of Grandpa Frantz.

Cheers,
Keith

MarC on January 13, 2012 at 07:30 PM said:

Frantz THANK YOU!! I Have my original 1968 bug with 150,000 miles +++ on her and thanks to your system I have the original engine with the original parts. Everything OEM and going at 100 % . Going to do a rebuild soon with quality OEM German parts. I want to send you the video of my findings. I have had this car since 68, but not the filter. I had the filter installed in 1971 after 10,000 miles. Its paid for its self 100 fold. THANK YOU!!!!!!!

David L. Crow on December 25, 2011 at 03:31 PM said:

I saw my first FOC at a Ventura county fair in California while a teenager in high school. They seemed like a good idea then and still is for that matter.
Over the years, I have had them on all of my cars and have become convinced that they are the best filter on the market today.
I experimented with lots of different oils over the years, but I am sold on Amsoil. With the Amsoil and the FOC, I have an unbeatable team working to protect my vehicle. My Father and I drive a 2009 Kia Spectra with a 2.0 4cyl. At aproximately 11,000 miles, I installed an older FOC and have since replaced the older unit for a new 2000 Model. The car now has 35,700 miles on it and is running better and better. I have not needed to change the oil yet; I just change the filter element at 5000mi intervals and add 3/4 of a quart of Amsoil 5W30.
I use an Amsoil spin-on filter and change it once a year. The dealer told me that the filter would void my warranty if I didn't change the oil every 5000mi. I told him that the oil was still clean and that was rediculous! My oil still looks almost as clean as new oil (honey colored). We told the dealer at about 10,000 miles that the engine was building up varnish and they didn't seem too concerned; so, I changed the Mobil 5W30 and put in the Amsoil and haven't changed it since because it still looks clean at approximately 25,000 miles.
The varnish doesnt seem to be a problem now;so, I believe the Frantz will keep on cleaning my oil and there is no telling how long the engine will last. The warranty is for 100,000 miles. I don't anticipate any problems as the car runs like new and the oil stays clear. I changed the spin-on filter once at 30,000miles and will change it again at 45,000miles. One last thing,
I got my supply line from the oil sending unit and am returning the clean oil into the oil filler cap.This is all right on the front side of the motor clearly visible and easily reached should I need to remove it to change hoses. There is an open spot on the passanger side of the motor and that is where I mounted the filter. It just fits there like it was made to be there from day one! I do;however, have to unbolt the unit to service the tissue element.
Well, thanks for all your help. I look forward to doing some more business with you when the occasion arises.
Several years ago there was an old man in Lafayette, LA. and he sold and installed the filters; but he died and I am glad you are there for me as well as George Walker Enterprises.

Jim M on December 8, 2011 at 04:30 PM said:

Well my Dad bought a Frantz filter back when I was a kid in the 60's he used it on his 64 F250 he took it off when he sold the truck and it sat in the garage till I bought my 99 F250 with a 7.3 Diesel. Although I don't use the filter on the engine oil I do use it as a fuel filter as I run used transmission fluid for fuel and the filter works great it almost makes the used fluid look new ... Thanks ...Jim

Christoph, Germany | www.frantz-oelfilter.de on December 8, 2011 at 11:54 AM said:

Great, to read all these interesting comments on the FRANTZ! Since 2008 we are working to establish the FRANTZ filter system here in Germany (and all over Europe, too)! Here and there I do speak to customers, who remember the FRANTZ from olden times and now are happy to realize, that it is back and available again!

The following note is not a covert advertising, but it is simply the trouth: The FRANTZ is the most reliable micro filtering system we do know all over. Maybe, not the most "trendy" one, but definitely the one with the longest and best experiences: Install it, run it, change the TPs and ... for the rest: Forget it!

So, we will definitely keep on going the "FRANTZ way"!

John Daily on December 5, 2011 at 09:49 PM said:

I have been using one on my PA14 for a lot of years and it was on there a lot of years before I had it. Very effective and trouble free. I was leery about keeping it on when I bought the plane, but a little research and talking to the people who have had them for years turned me around.

Larry Shade on October 26, 2011 at 12:21 PM said:

Saw one in a truck years ago, very interesting

Dale Frantz on October 1, 2011 at 08:25 AM said:

My Father would be very happy to see his invention still being used, i remember working days and most of the nite to get orders shipped...this was in the 1950's, i was just a little guy, back when it was a family business.

Thank You, in Christ Jesus, Dale

Len Schellenberg on September 5, 2011 at 04:06 PM said:

I remember being a distributor back in 1966, in the Okanagan Valley, Canada. I lost track of the company and am glad to have found it. It is an excellent product; the only difficulty is manufacturer's warranty. The Frantz Filter truly works.

NOTE: Frantz Filters is under new management and ownership from the 1966 era. Frantz still maintains an honest manufacturer's warranty.

R. Williams on August 14, 2011 at 01:41 PM said:

Was a dealer on 64th St. Mr. Williams we called him. No relation. Was in Paramount,Calif. He loved to talk Frantz oil filters. Wonder if he is still at it?

Jim Crim, Calhan CO. July 25,2011 on July 25, 2011 at 06:44 PM said:

I have a Frantz oil cleaner on my Ford 391 industrial 1969 Mitts&Merrill wood chipper. Oil stays clean, not sure how many hours chipper has on it since I got it secondhand, I've had it 15 years and it's still running strong and oil stays clean. I should put a Frantz oil cleaner on all my equipment.Didn't know they were still available till I had to search for info on this unit. Very pleased with this product.

Jim Dunkin Dallas on July 8, 2011 at 04:43 PM said:

I was sitting in a motel restaurant in April 1964 having breakfast. I was a 20 year old salesman working my Little Rock Arkansas territory and this man comes in and begins to show me a chrome filter. He caught my attention when he said it used common household toilet paper instead of a expensive retail filter. I believe I paid somewhere around $40.00 for it and I put it on my 55 Chevy 265 V8. It came with a felt strip where I could test to see how clean my oil was getting. I traded that Chevy for my first new car, a 65 Mustang and never had another Frantz cleaner again. That was 47 years and I'M still a believer. It worked very well and I will be getting one for my latest project, a 51 Chevy 3 window pickup with a 350 crate engine.

David G. Root on June 24, 2011 at 02:12 AM said:

I have been around these filters all my life and know the whole story behind the inovation and genius in the development of this filter, as I should seeing as i am Robert Powell's grandson. Being a tool and dye maker by trade, Grampa Bob was alway's telling me boy the key to a long life engine is clean oil and that's why I invented this filter, and he wasn't joking. The family built dune buggy with 40 hp VW engine had over 160k on it with only 2 oil changes and the oil looked new, and that was after 3 trip's to Death Valley, when I first witnessed it's greatness!

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