[FastDoc]

+1 on the chain lube.

Mine seems to leak from the kick starter inner seal as well.

Clean everything up, including the area by the countershaft sprocket. You can use engine degreaser and rags +/- carb/brake cleaner. BE CAREFUL for your eyes and paint.

Then observe after every short ride to see the first place that gets oil. I bet it's the inner kickstart seal.

I plan to let mine go for now. I wipe off the oil every couple rides before it gets a chance to drip down the side of the engine to the bottom.

I'm a bit angry about this manufacturing defect. I plan to bring it to the dealer for repair, but I'll wait until near the end of the warranty period so any other squalks that may develop may be addressed at the same time. I'm 2+ hours away from the nearest dealer.

[dickim]

I had hoped that - but wiping off a few times and still there - in fairness to the dealer they did offer to fix, but a 1hr ride each way, the "need" the bike for the day, so the train into work, and dump new oil - my suggestion to be given new O ring for next change

[heloego]

Ok, copy that.
Make sure your o-ring groove and the o-ring are clean when assembling. The currently installed one may have been nicked during assembly.

[Ducati Scotty]

Or gotten a bit of grit on it.

[Dharmabum]

my 2014 c5 leaked  a drop from the main drain plug from new at the 500k service a little bit of gunk(??) I was told the diameter of the o ring ( not the radius) was under what it needs to be to give a complete seal. So if its the drain plug that's leaking that's the fix. They said they were waiting for a bigger diameter o ring to be supplied to them by the factory.

[JVS]

You can try unscrewing the main magnetic drain plug just a bit, and then tightening it. Torque figure is 2 kg/m (20NM)or 1.34 lbs/ft. Oil won't drip out if you loosen it just a bit. After re-tightening, clean/wipe off the residual oil and go for a ride and check again for any leak.

Also, when you unscrew the main drain plug ( just a little  ), you can try applying a high-temp silicone sealant throughout the circumference of the plug. Then tighten it about 90%, wait 1 hour and then tighten 100%

[Manatoc fox]

Which model, B5, C5 or G5?  Have you looked in the air cleaner?  If it's in the air cleaner it's probably a tad overfilled and blowing out into there.  It is not normal for these bikes to leak.

If you can't isolate where it's coming from, where is the puddle  on the floor?  Right, left, front, back?

Scott

Seems to be coming from the right side or directly underneath, but moreso when I leave it on the side stand.  Any ideas?

[SteveThackery]

Seems to be coming from the right side or directly underneath, but moreso when I leave it on the side stand.  Any ideas?

Honestly, mate, this is so hard without actually being there.  There could be loads of possible places for the leak.

If I were you, I'd get the entire underside of the engine completely clean, and then lie under it and watch.  Have you got some way of raising it from the ground?  That would make it easier.

Maybe you could get it clean, and then blow talcum powder all over it.  That way you might see a track where the oil has travelled, and trace it back to the source.

[Manatoc fox]

Ohhhh, talcum powder is a good idea!!!  I'll try that.  Thank you.

[Ducati Scotty]

Or spray on foot powder.  Easy to apply, shows exactly where it's coming from, washes right off when you're done.

Scott

[mattsz]

The spray on foot powder might actually "cure" your leak! 

[Craig McClure]

WWII Brit military bikes were surprisingly oil tight considering the primitive & hasty build, due to heavy coats of paint brush applied to the entire engine. Only mentioning this to make you feel fortunate you have a UCE Enfield.

[Sectorsteve]

Mine dribbles. Sometimes. Culprits are.  1 . Stuffed gasket engine Casing right side.  Replaced gasket but I find high temp gasket glue works better instead.
2. Gear change seal. Replaced and all sorted.
3. Oil sump plug . Copper washer and o rings and right tension on those nuts required. I'm currently down 1 of those bolts as ones head popped off. Only one bolt in and no leaks still.
4. Under fill rather than over fill.

I've kinda given up. Got so much to do on this thing as always and I'm just riding it as is ATM. However I really need to get those broken bolts outta about 4 places. Master cylinder. Oil filter, oil sump. Handle bars. Sick of being covered in enfield grease on a daily basis so I'm just riding it as is with a horrible right hand vibration...