UK Car Repair Questions? Ask a Mechanic for Answers ASAP
The first thing to ask is what oil did they fill it with?
as if its too thin then is more readily drawn past the rings and seals and burnt in the engine, if this
is OK then I'd check is the crankcase pressure relief valve (PCV) these are sprung loaded andare only meant to 'burp' excess pressure every now and then. The exiting gas is piped back to the inlet, however should the valve stick open then the enginetends to suck the air out of the crankcase all the time and this carries oil over with it.
If you remove theair intake pipe and look inside where the crankcase breather is plumbed in you may find evidence of oil.
If you do find oil replace the valve. If this is all OK then its possible that the valve stem seals are past their best and are drip-feeding oil into the intake. These can be replaced without removing the head by a competent garage in half a day or so
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