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Engine Oil Centrifuge For Project 300

Could This Be The End Of Disposable Filters?

Text By Jason Thompson, Photography by Jason Thompson

On some automobiles, finding and replacing the engine oil filter can be a hassle, since each vehicle seems to use a different filter location-some of them in pretty hard-to-reach locations. But what if we told you the day of the disposable oil filter could be near its end? It won't happen overnight, but the possibility is out there. The key lies in using centrifugal energy-instead of paper media-to remove the contaminants from engine oil.

The centrifuge filter has been around for hundreds of years and has served many different purposes. When used as an oil filter, the centrifuge spins the dirty oil, and due to centrifugal force, the heavier soot and contaminants separate from the lighter oil. A centrifuge oil filter can't separate things that are molecularly bonded together, but they can sort out suspended particles of different mass. At least, that's the theory.

Science and Oil Analysis
We plan to test this hypothesis with science in the August issue of Diesel Power and at DieselPowerMag.com, so be sure to stay tuned. We're working with Lane Crandall of Oil Analysis Lab to help us set up an experiment. Crandall was as excited as we were because he felt this article to be very timely. He deals with oil centrifuges all the time in heavy industry, and the amount of information his company can tell you just by analyzing the oil is amazing-see "Motor Oil Science" (March '07).

Information on Fittings
AN Fittings: AN fittings were developed by the United States military for the Air Corp (Air Force) and Navy, which gave them the name AN. The 37-degree flared fittings range from size -2 (dash two) to -32. According to Van's Aircraft, -4 aluminum fittings should be tightened 1 1/2 to 1 3/4 flats (six flats per nut) or 100 to 140 in-lb after the two flared surfaces touch and -6 AN are 150 to 190 in-lb or 1 to 1 1/2 flats. Another tightening method is to turn the nut 1/4 of a rotation once the surfaces initially touch. This applies to all sizes. Don't use any sealant on AN thread fittings.

NPT (National Pipe Thread Tapered Thread): NPT is a tapered thread standard originating in the United States for joining pipes with sizes ranging from 1/16 to 24 inches. Make sure to use a sealant. We used Teflon tape and rolled it on the threads for three rotations clockwise, starting on the top so the end will lay smooth when it's screwed in. Torque 1/8 NPT 4 1/2 turns by hand and 2 1/2 turns by wrench and 1/4 NPT 4 turns by hand and 3 turns with a wrench (torque specs vary due to imperfections-do not overtighten).

PARTS LIST
PART PRICE
Dieselcraft $599
OC-25 oil centrifuge:
Amsoil 6.0L aluminum $126
oil fill cap (PN BK1101):
ANPlumbing.com push-lock end -6 AN $4.90
female to 3/8-inch hose (PN 700167):
90-degree elbow 1/8 NPT male $10.60
to -6 AN male (PN 982262):
3/8-inch push-lock hose $20
(blue) x 5 feet:
1/4 NPT female tee (PN 991702): $15
-4 AN male to 1/4 NPT (PN 961644): $2
-4 AN female to 1/4 NPT $9
swivel (PN 916144):
Total: $786.50

Centrifuge Believers
Dieselcraft gave us this list of diesel engine manufacturers which use (or have used) engine oil centrifuge technology on diesel engines:

Daimler AG Detroit Diesel International
Cummins Land Rover Caterpillar
BMW Mack Trucks Truck & Engine
Ford

Centrifuge Believers Dieselcraft gave us this list of diesel engine manufacturers which use (or have used) engine oil centrifuge technology on diesel engines:

BMW Caterpillar Cummins Daimler AG Detroit Diesel Ford International Truck & Engine Land Rover Mack Trucks

SOURCES
Adam-Hill Company
142 Utah Avenue
South San Francisco
CA  94080
650-589-9655
www.adam-hill.com
Dieselcraft
PO Box 7670
Auburn
CA  95604
530-823-7075
www.dieselcraft.com
Earl's Store #1
15827 Hawthorne Blvd
Lawndale
CA  90260
310-542-0856
www.anplumbing.com
Third Planet Energy
N/A
AK
818-599-9119
www.thirdplanetenergy.com
Black Lightning
31 Astor Ave
Norwood
MA  02062
800-701-4038
www.lightninggloves.com
Van's Aircraft
14401 NE Keil Road
Aurora
OR  97002
503-678-6545
www.vansaircraft.com
Weatherhead
14615 Lone Oak Road
Eden Prairie
MN  55344
www.eaton.com/hydraulics
AMSOIL
925 Tower Ave.
Superior
WI  54880
800-777-8491
www.amsoil.com
Optima Battery
5757 N. Green Bay Avenue
Milwaukee
WI  53209
888-867-8462
www.optimabatteries.com
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By Jason Thompson
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