Aprilia 1000 (Rotax) oil level

[A100man]

Hi folks..

giving the Falco a once over and thought I'd check the valves as no-one can ever be arsed to to that it seems (a few were tight and need changing ) In doing so you have to remove air box and throttle bodies etc.. Airbox was oily probably about 50ml of oil swilling about inside. I preseume this has come from the breather and likely caused buy overfilling - usual dry sump issue.

Cold after not runiing for several day/weeks oild level is over halfway up sight 'glass on teh oil tank. when on sidestand. I'm thinking I should extract some oil maybe 1/2 litre using a turkey baster or similar..

What y'all think?

PS oil filter is reusable sponge type and is also pretty oily - should I clean with petrol? brake cleaner? something else?
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[stinkwheel]

[A100man]

Thanks - good info, makes sense.
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[stinkwheel]

I'll add, my enfield is a dry sump motor (a really basic one) and periodically it'll "wet sump" due to a mathematical oddity where all the holes in the oil pumps (which are piston pumps) align when the engine stops, giving the oil a straight run through from the oil tank to the crank feed. OR if it's been parked for a long time and the oil's just found its way there. I usually remember to park it on compression which raises the crank pin higher than the feed and largely prevents this but I sometimes forget.

If it happens, it's not usually an issue, a couple of minutes on idle clears the sump and puts it back where it's supposed to be. However, if I've had a brain fart, it wet sumps and I check the oil level with it cold, find it low and top it up. I can land up with it both wet sumped and with WAY too much oil in. If I run it then, it pukes a load of oil out through the breather.

On mine, I have a bunded breather that returns most of it to the oil tank but if that wasn't there, it would just make a hellish mess round where the breather comes out (in my case, the chain).

If your wet sumped, it would breathe it out into the airbox. So that oil might just be from one incident. Or it could be you checked and topped up the oil level while it was wet sumped and inadvertantly added a whole load extra.

Now you will have a WAY more efficient oil pump so I'd expect it to suck any excess oil up after a few seconds. What I'm getting to is if you come to it after it's been parked up for a bit and the oil level seems low, don't top it up until after you've run the motor unless it's out of sight low.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.