My Little Tractor

Exhaust manifold looks wet where it joins the silencer. Is it black oil, does it smoke? If so it could be the valve stem seals.
The wet pipe is the power steering pump but it looks to be getting dripped although there's an o ring on the elbow.
Head gasket does look wet on the left, oil or coolant?
 
Plus the windscreen wiper has stopped working, halfway through a sweep - naturally - so it's now stuck in the vertical position
 
It's more on pictures 3,4,5 & 6 than on 1 & 2
It probably needs a good clean up try and clean as high up on the engine as you can, aerosol of brake cleaner is good for clean up, saves getting everything wet, some of the leaks on pics 3 and 4 look more like coolant (or fuel) it does look a bit rusty behind pipes on pic 5.
Clean it up check all levels and run it and see what/where it starts leaking from
 
The bowl I put underneath has definitely captured oil.
I forgot to say, I hadn't properly checked the water for a long time 😳 then it took 1.5 litres to overfill it šŸ™
 
It probably needs a good clean up try and clean as high up on the engine as you can, aerosol of brake cleaner is good for clean up, saves getting everything wet, some of the leaks on pics 3 and 4 look more like coolant (or fuel) it does look a bit rusty behind pipes on pic 5.
Clean it up check all levels and run it and see what/where it starts leaking from
The core plug behind the breather pipe looks to be weeping, it will run along the headgasket line and look like it's coming from somewhere else.
The pipe on the power steering res/pump is a different issue. Clean off, try the nut under the tank then tie a cloth around the elbow to see if it's still leaking. O ring gone if it won't tighten
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I had another look, as best as I could due to the pesky midges.
I wiped the damp with a tissue and it looks watery rather than oily. I swished the contents of the bowl and dipped my finger in it, and that seems to be watery too. Tractor is now standing on the flat (was slightly nose upwards before). It looks like the wet is starting from the rear of the block, up behind where 2 narrow pipes go round it.
 
I'd still reckon on that core plug weeping and perhaps another on the rear of the head. Are those small flies stuck to the pipe under the power steering pump, pic2, that would point to antifreeze. It's sweet but deadly.
 
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