Oil filter number

I use a Mahle OC5 available from Opie Oils or Ebay

Previously tony_harris wrote:

Previously tony_harris wrote:

I have a RGM oil filter kit which is the same as a number of suppliers use.

Does anybody know what replacment filter number fits. I think a FRAM PH---- and sure others fit as well like a 2CV. Help

Just had a reply off another form. Check out site below. Tony

http://atlanticgreen.com/oilfilter.htm

While my research started in 1989, it was updated in 2007. It may not help if people in places other than the USA have not heard of Ducati. They are fairly popular here. I feed my Nortons and 3 Ducati with the same 16x1.5mm filters. At least half my numbers listed are european in origin.

Dave

http://atlanticgreen.com/

I also use a Mahle OC5 on my 750 Commando and 650 Dommie. They are available from my local motor parts supplier. Just £4.50 inc VaT.

NOCShop sell a suiable replacement filter

I have a RGM oil filter kit which is the same as a number of suppliers use.

Does anybody know what replacment filter number fits. I think a FRAM PH---- and sure others fit as well like a 2CV. Help

The Commando type filter base have a 16mm X 1.5mm pitch thread. Not very common with todays car engines filterswhich tend to be expensive, around $16 plus,and not easily found in car parts shops. To overcome this,I fit a thread adaptor on the Commando mountbase to bring it up to 20mm dia X 1.5mm pitch, which is amore common mount sizeand the filters are only around the $6 -$7 mark, (3 - 3.5 quid), andreadily available inparts shops. My missus Mazda takes a #436 filter, 20mm dia. X 1.5 pitch,so I buy a box of them so one filter does all my bikes, and her car. Another one I have also used is #445 which is only a mm different in the can size,so carries another part number, but does the same job.

Paul

Lateral Thinking................Reading through the excellent Atlantic Green survey of Commando oil filters I noticed that my choice, a Mahle OC5, falls into the group with a low 12-15 psi bypass rating. So apparently does the recommended Norton type. What concerns me is that my filter set-up (& I guess for most Commando owners) is directly linked to the return side of the oil pump. Now I am informed that the feed side of the oil pump churns out 45 - 55 psi or more from cold and because the return side has larger gears is presumably even higher.

So..........if the bypass kicks off at around 15psi does this mean that all the rubbish in the sump, during a cold start-up, circumvents the filter and heads off to the oil tank??? Or, does the filter allow enough oil through it to keep the pressure in the system low? Unless the filter is blocked.

I should imagine that a 4 cylinder car enginewould have a considerably greater oil flow onit's pressurefeed side than a Norton return side pump. Unless the filter element is unduly clogged through lack of maintenance, I would not expect the by pass valve to lift.

And........there should not be any rubbish residing in the sump if the filter has been doing its job during the last run.!!

Filters I have dismantled generally have two valves, the first is a rubber flap up against the ring of holes around the perifery of the can to keep it primed bypreventing oil draining back when the engine has stopped. The second is generally fitted at the back of the can and is held closed by a spring. (This can be seen down the bottom)This valvewill open by pressure build upto allow oil tobypass the filter element in case it is tooblockedbycontaminated, this allows the oil to keep circulating.

Here's a few :-

Champion H 101

HF 153 (Hi Flo, most bike shops sell this brand)

K & N 153, has a nut on for easy removal

Fram PH 2839

sam