Oil Filtration

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werner
Posts: 464
Joined: Tue 24 Sep 2013, 23:35
Location: Cape Town

Oil Filtration

Post by werner » Sun 11 Nov 2018, 17:16

As I drive a Jap diesel, Mazda R2, I had to buy a second hand engine some 13 years ago. What was interesting was that some R2 and all RF (2l diesel) engines had two oil filters. Some time back I read on a aussie mazda forum that the second filter was actually a bypass filter that was filtering smaller particals out of the oil.

There is a lot of websites explaining it.

https://www.machinerylubrication.com/Re ... filtration

https://www.amsoil.com/bypass/how-it-works.aspx

There is also http://www.gulfcoastfilters.com/1,000,000%20MILES.htm That claims 1000000 miles on the same oil

Copy and paste

Nine years to prove the point that “Routine” oil drains can be SAFELY eliminated. Thanks to the use of a GCF By-Pass Lube Oil Filter, we’ve exceeded 1,000,000 miles on this 1990 Peterbilt with only one unnecessary oil drain. And we did it with conventional petroleum oil; not an expensive synthetic!

On June 21st 1999, at 1,012,825 miles, the above Peterbilt rolled into Covington Detroit Diesel for the 3rd time during the past 9 years for an internal engine inspection. The past two times, at 505,000 and 761,000 miles, Shell Oil and Covington Detroit Diesel personnel inspected the engine for contamination and wear. Their findings – “Exceptionally clean engine and NO measurable wear.” Both times, the engine was inspected and reassembled with no parts replaced. At the 1,000,000 mile inspection the results were virtually the same, the only measurable wear that could be found was on the rings. 1,000,000 Miles and only rings replaced? Not bad for 9 years and 1,000,000 miles of hard work with only one oil drain! The truck is now back to work and pulling for the 1 ½ million mile mark with the original bearings, liners, cam, overhead and etc.

How did we do it? The owner simply changed the inexpensive GCF “elements” every 10,000 miles and the factory full flow filters every 30,000 miles. By following this safe and simple maintenance schedule, the oil stayed clean 100% of the time and wear was drastically reduced within the engine.

They claim the truck did 1000000 miles in nine years, and is off on the next 500000 miles, but that was in 1999, nineteen years ago and their site has not been updated again. Just wondering what happened to the truck.

On the aussie forum it is mentioned that there is duel filters on the market, acting as both inline and bypass filters, but I never heard of it, or seen it advertised.

On ebay there is a lot of bypass filters for sale, https://www.ebay.com/bhp/bypass-oil-filter

Even one for R3855.38 that works with a roll of toilet paper https://www.ebay.com/itm/The-REFINER-to ... 3224684181

If it is that good, why do'nt the car manufacturers supply it with the cars.

I think I shall just stick to the normal oil change and check.

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