Thread: OEM centrifugal oil filter

the 2 easiest ways to tell if its doing its job is to monitor the soot in the engine oil and to weigh the filter before it goes in, after youve submerged it in oil for 20 minutes then let it drain for 20 more. then one more time after you pull it out and let it sit for 20 minutes.

if the weight doesnt go up, its not working.

Or you could just cut it in half with a hacksaw after you change it and see what clings to the walls.
IMHO it is pretty easy to see if it is working. IS your oil black and crappy after say 4KK like a Jap diesel?
If not it is working!

Regards Philip A

Technically, it's a centrifuge, not a filter. It fills with oil, and is driven by oil pressure forcing oil out the two angled holes on the underside of the rotor. Centrifugal force is centrifugal force, regardless of who made the rotor ....

The place where the difference can matter is how well balanced the rotor is when manufactured ... It it's badly out of balance it will make it's presence known as it spins down after engine shut off ... If it's well balanced, you'll be hard pressed to hear it spin down on engine shut down.

Regardless, the centrifugal force will be the same between both (given the same speed), and both will spin out carbon particles as effectively as the other ....

Too soon to tell by oil colour but I'll keep an eye on it and weigh it every 1000km. The previous was a LR part and I was amazed how clean the oil stayed. barely changed after 5000km. Changed it after 10,000 and it was cleaner than any petrol car I've had. Hoping for good things.

Originally Posted by Fluids

Technically, it's a centrifuge, not a filter. It fills with oil, and is driven by oil pressure forcing oil out the two angled holes on the underside of the rotor. Centrifugal force is centrifugal force, regardless of who made the rotor ....

The place where the difference can matter is how well balanced the rotor is when manufactured ... It it's badly out of balance it will make it's presence known as it spins down after engine shut off ... If it's well balanced, you'll be hard pressed to hear it spin down on engine shut down.

Regardless, the centrifugal force will be the same between both (given the same speed), and both will spin out carbon particles as effectively as the other ....

Going to disagree with that....

the position, orientation and size of the holes, the quality of the bearings, how well it balances up will slow down the spin speed. slower spin speed lets more soot slide past.

Fortunately its really easy to tell a dodgy one by looking at it the outlet holes will look Wrong and when you put it on the shaft it'll wobble a little on its bearings.

Here is my original enquiry to Cooper Filters:

"........I have recently fitted your aftermarket centrifugal oil filter WCO 103 (interchanegable with Landrover/Ford R2698P) with an oil change on my 2004 LandRover Discovery 2 TD5.
I have since heard " on the grape vine" that the aftermarket centrifugal oil filters do in fact not behave centrifugally, and that only the genuine LandRover part does.

Can you please confirm that your filter is made to the specifications of LandRover and that it does perform as LandRover would expect it to."

I think their response, if honest, suggests that their filter (technically centrifuge) performs to the specs LR would expect. If not honest what's to do? I was impressed that they apparently went to the trouble of testing.