Centrifuge Oil Cleaner for Diesel Engines

DZL_LOU · **Posted:** Sat May 12, 2007 7:28 pm

Wanted to pass some information along from http://www.dieselcraft.com

These are centrifuge diesel oil filters that are reusable and catch solids or particulate to 1/10 of 1 micron. The centrifuge operates with a rotor that spins inside the drum at 7,000 rpms. The rotor looks like an upsidedown Rainbird sprinkler.
These were developed for Semi's and heavy equipment engines but have also available for other diesel engines.

You can leave your regular oil filter on but since the centrifuge catches particulate down to less than 1 micron, changing the oil filter is not needed each oil change. Installing the centrifuge requires some additional plumbing. Some have used a "T" fitting to where the oil sending unit attaches. Either rubber hydraulic hose or steel lines can be used to connect to the centrifuge.
Check out the photo of the filter at the website as it shows the caked on oil sticking to the sides of the centrifuge.

The centrifuges cost $289 including the brackets and hardware for the smallest unit the OC-20. A larger unit the OC-50 handles 110gph at $479 might be a tad large for the 2.8L CRD.

My initial thought is if your not running the ORM, then this could help reduce the amount of particulate running through the oil system from the EGR.

techTim · **Posted:** Sat May 12, 2007 11:26 pm

Wow, very cool idea. The picture of the unit after ten hours is really impressive, all that clean oil in the pan and the black junk in the separator is a great visual. You think ten hours is just after an oil change, or the effects of the cleaner on dirty oil?

that's definitely going to be an addition to the 'lil libby when I can afford it. :wink:

Thanks for the eagle eyes and research, I bet there will be many diesel and Bio specific products out there in the future with alternative fuels making a big influence on peoples vehicle choices.

have you looked at this fuel filter unit? might be a good one, but does not have the prime pump, and with the CAT filter adapter and a little careful reassembly it might be moot.
http://www.ramcoperformance.com/turbofyner.htm

Tinman · **Joined:** Mon Apr 10, 2006 10:45 am **Posts:** 308

I've seen these discussed on other diesel forums and they are apparently very good. Using one of these as a bypass filter, one could use a true synthetic oil and oil change interval can be indefinite (with analysis of course). I toss around this idea from time to time, but I haven't done it yet.

LanduytG · **Joined:** Sun Dec 11, 2005 6:59 am **Posts:** 188

These filters work very well. But they also require a lot of flow volume to make them work. Most small motors just don't have that kind of volume.

Greg

DZL_LOU · **Posted:** Sun May 13, 2007 8:24 am

LanduytG wrote:

These filters work very well. But they also require a lot of flow volume to make them work. Most small motors just don't have that kind of volume.

Greg

Very good point Greg! The volume is key to the spin in the centrifuge.

chadhargis · **Posted:** Sun May 13, 2007 10:22 am

Evidently a big wad of cash is also the key to these filters working.

spoonplugger1 · **Posted:** Sun May 13, 2007 2:23 pm

This is nothing new, they been on ships, etc. since before WWII. We used a seperate pump and motor to spin the discs inside on the shipboard units. We also had a steam heater so we could clean the oil, engine running or not. What they may not mention is what a pain in the posterior they are to clean so they can keep doing their job.
I vote for a good filter on the system we have now.

RedStapler · **Joined:** Fri May 11, 2007 10:04 am **Posts:** 77

Reading some of the trade rags for the Trucking Industry the on board oil cleaners allow them to extend oil change intervals out to 40-60k miles.

My question is where do you shoehorn the thing on a Liberty? Its not like there is a lot of spare room under the hood, or most anywhere for that matter.

litton · **Posted:** Sun May 13, 2007 8:13 pm

Note that the centrifuge cleaners...beside requiring very high flow volumes also depend on significant a density difference between the fluid and the particle. They are not filters so anything that has a density close to the oil, will not separate efficiently.

o8k · **Posted:** Sun May 13, 2007 8:39 pm

sounds interesting, Ill be finding out soon if my Amsoil bypass is worth a dern er not, from visual observation, i dont see any noticeable difference in oil color, so far disapointed in that. But the real proof is of course an oil analysis, Soon as my analysis kit arrives in the mail, ill be testing it for real, hoping that will be this week....

o8k

Centrifuge Oil Cleaner for Diesel Engines

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