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as above - filth from engine breathers is normal
as is - sensors leaching contaminated oil from the engine into ECUs so they (hopefully - from Mercs side) self destruct
I did replaced the PVC breather valve and the bleed valve ( if I'm correct ). So the oil contamination is still as something normal??
I only noticed as it was leaking from the pipes...
the act of starting any piston engine running petrol - creates heat, acids, moisture and carcinogenic stuff - together it makes a nasty cocktail of filth - its what kills engine that only do short journeys -
getting
1) the oil to 80c and cooking it off, on a 10 mile or greater trip is the way forward
2) regularly giving the car full exersize once its fully warmed up (after 15 mile drive in warm temps) so the piston rings learn and stay working as designed
3) allowing the engine breather system to work by 1 and 2 above and keeping the oil, filters and PCV valve clean
4) all the other stuff I forgot to mention
on the tractors, they build up that gunk more readily - its all the same idea
although there were modified parts for the engine breather (usually with orange silicone gaskets) - a diaphragm might have worn out reducing its effectiveness
the pictures of yours I guess are the slightly later implementation of the 350cdi ? Many forums (usually talking about the earlier cars) contain reports from experts that this gunk drips down on to the inlet port shut off motor (AKA in the grown up world as 'swirl flaps') and destroys it - I am not of that persuasion
the filth diesels create, and because of the need to maintain engine temps and heater operation recycling via the EGR, means much of the inlet ports block with soot and this breather mess - this then causes the butterflies of the swirl flaps to seize and the motor burns out
swirl flaps are pathetic extras blocking up and restricting the inlet ports on later tractor engines - to pretend to create additional turbulence improving low engine speed exhaust emissions - you can throw them away with almost no way to tell if they are in play or not - on BMWs they were designed to snap off and destroy the engine and turbos - they later replaced the metal butterflies circa 2009 with more fragile plastic ones that almost as easily destroy the engine and turbos. Its not unknown for the Merc ones to ingest the swirl flaps and destroy the engine - but its a lot less likely than on a BMW - but still best to disable in the open position before everything starts to fall apart - many cope quiet nicely by disconnecting the wires and joining the centre two pins with a metal film resister that the car and its diagnostics can't tell is not a working motor - 1w 4.7k ohm on swirl flap motor plug, Pins 2 and 3 (centre two of 4 pins) connecting red/green wire and the grey wires
this is a clean unblocked set of ports on a Merc tractor - most are horrible !!! still, I guess its better than pushing it in your children's lungs
.... 50 50 water meth mix atomised and sprayed in the air cleaner - 2 litres over 15 mins on a hot engine
USA owners all think they should get a free walnut blast clean of their inlet manifold with each tank of fuel - many BM owners literally have !!!! wot a load of rubbish - its just what u get buying a tractor
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