Sounds like a leak from the screw - a bit of a coincidence to suddenly get a leak from some other place.

What volume of oil did you put in?   The recommendation used to be 25ml but is now half that.   If you had put in 25ml you may be OK?

I am now using blue hylomar gasket sealant on the plug.  It is a non-setting sealant and seems to work well both as a sealer and to stop the plug undoing, and is easily found in UK.  Obviously clean the plug and hub threads first.

Thanks - I used the volumes (and instructions) provided in the kit from SJS cycles

Hello

As per my other post re chain slippage, I changed the Rohloff oil at the weekend

Rode it into work today for the first time this week & a small pool of black liquid gathered under the back wheel (noticed by a colleague about an hour afer I arrived)

Thing is I lost both new & old grub screws during the oil change (I find it quite fiddly putting them back in, and my eye sight is not what it used to be)

I then found the old one (which had a small amount of sealant on it) so had to use that

So I suspect this was insufficent & the black pool was an oil leak (although it didn't seem particularly oily when I cleaned it up)

How critical is the quantity of sealant in preventing Rohloff leaks?

I have purchased replacement kit so the hub should be nice and clean after a 2nd change in 7 days!

👍 thanks for the feedback.

Tightened the chain and changed oil - seems to have fixed it!

Not sure whether one or both solved it though..

Since I mostly ride the road bike, I didn't want to spend the money -- or effort -- getting a Rohloff setup.  Boy, do I now regret that!  After just 8 months -- not much more than 1,000 miles -- I already had to spend $200 for a new Shimano GPX shifter!  What freaking garbage!  So, any ideas for a Rohloff equipped gravel bike?

The gravel bikes I see advertised are generally drop bar bikes with moderately wide tyres, no mudguards and derailleur gears. In my opinion, drop bars depend on personal preference, at 69 years old I still prefer them for longish rides, even off road. Fairly wide tyres are sensible.

The other two features may be OK in a mostly dry climate but are not suitable where I live (near the coast in South Brittany) for what I reckon is the purpose of a "gravel" bike - riding on both tarmac roads and unsurfaced tracks and paths that aren't quite rough enough to warrant a mountain bike.

In the 1970's, when I lived either in Devon or Lancashire, we called it "rough stuff" and used touring bikes with 27" tyres in the 32 mm which was the widest easily available at the time. And derailleur gears, because the only reliable hub gear readily available was the Sturmey Archer 3-speed.

Then and now, for that kind of riding, I need mudguards, as if I want to use the bike reasonably often I am not going to wait until the rain stops and the road surface dries out.

The same goes for derailleur gears now that medium and wide range hub gears are availble. I don't want to have to clean the drivetrain after every other ride just because the track was wet. So a Rohloff and Chainglider works well for me. For most of my rides a Shimano Alfine or Nexus Premium eight speed hub would be sufficient, but it is nice to have the very low gears of the Rohloff for the occasional very steep hill.

I suppose a belt drive would be just as good, but none of my existing bikes are belt compatible, so not worth trying unless/until I need to get a purpose-built electric bike with advancing age.