Oil Change

[scorpio24v]

I just got 4 litres of fully synthetic 10w/50 from Hein gereke for 21 quid and a champion oil filter, allegedly OEM fitment for Aprillia, KTM and Ducati, From Halfords for a fiver, as the falco is a late one clutch slippage wont be a problem.

[Falco9]

I just got 4 litres of fully synthetic 10w/50 from Hein gereke for 21 quid and a champion oil filter, allegedly OEM fitment for Aprillia, KTM and Ducati, From Halfords for a fiver, as the falco is a late one clutch slippage wont be a problem.

You hope!

Nope only joking....You should be OK, My 07 Tuono has been run on fully synth from new with no problems. If it's a champion filter, chances are it's one of the older small ones, which are fine but Aprilia now recommend the use of the new longer filters in the V990 motor. I haven't seen Champion make a copy of these yet? unless anyone knows otherwise??

F9

[scorpio24v]

yea its the small one, the longer filter, with more filter media surface area will reduce the pressure drop across the filter, but the filter will be filtering the same particle size. More filter media will also increase the holding capacity.

As they are changed well before they reach their reccomended final PD I cant quite see the need for a longer filter, if its just longer. If on the other hand they have used a finer paper, to filter smaller particles, they would need to increase the filter surface area, (make it longer or put more pleats in) to keep the PD the same as before or the engine would either, collapse the filter with overpressure, or starve the big ends/mains with lack of flow.

Why do they reccomend the new longer ones?

[Falco9]

yea its the small one, the longer filter, with more filter media surface area will reduce the pressure drop across the filter, but the filter will be filtering the same particle size. More filter media will also increase the holding capacity.

As they are changed well before they reach their reccomended final PD I cant quite see the need for a longer filter, if its just longer. If on the other hand they have used a finer paper, to filter smaller particles, they would need to increase the filter surface area, (make it longer or put more pleats in) to keep the PD the same as before or the engine would either, collapse the filter with overpressure, or starve the big ends/mains with lack of flow.

Why do they reccomend the new longer ones?

According to "Aprilia" sources they have experienced "Filter" problems and as such introduced the new filter. I ran the Falco on the smaller filter for 5yrs with no problems and apprently a lot of owners are just sticking with the smaller filter anyway. As you say if you are changing the oil more frequently I can't see the need myself, but my dealer swapped the Tuono over at the 1st service. Somehow the genuine aprilia long filters are cheaper than the smaller ones! figure that out?

F9

[scorpio24v]

Having read the sticky and the stuff on AFI I have come to some sort of conclusion.

1, Rotax specified the original short filter for the design oil flow rate of the engine, which was at the time fitted to all models.

2, This filter has been in service for about a decade across the range with no reported failures.

3, The other models ie RSV/tuono have been uprated over the years, Capo/Falco and Fut have not, indeed Capo is detuned.

4, Longer filter has therefore been introduced to increase the surface area of the filter. As the dia is fixed by the engine filter housing, extra pleats, which would also have the same effect, cannot be accomodated due to the pleat spacing then not being optimal for flow with the resulting undesirable Pressure drop increase, the very thing the engineers are trying to reduce.

5, With the increase in power output in certain models, you may well find Rotax increased the design oil flow to increase cooling over certain more stressed parts. Oil plays a very important cooling role in an IC engine. When you increase flow, you increase the resistance to the flow, by the filter, which if you like, is a dam in the flow. This increase in pressure, Known as the pressure drop, will reduce oil flow through the filter, and starve the engine of oil, likewise if you dont increase the surface area and bring the PD down the filter will burst.

As our engines have stood still in relation to the factory development of the other models, the original specified filter will continue to perform as originally specced.

[Aladinsaneuk]

and that is why i have the longer filter and cover ready to go on this winter - the engine still has the same spec, but other parts have been added so I will make the change

[D-Rider]

I fitted the new filter and accompanying cover at the last oil change ... seemed no good reason not to do it ....

[Falcopops]

I fitted the new filter and accompanying cover at the last oil change ... seemed no good reason not to do it ....

Agreed, can't see anything but a benefit. Not done mine yet though.