Oil trap, Crankcase breather
The oilfilter housing for the D5244T5 comes intergrated with an oil trap/crankcase breather. If you remove the black plastic top from the breather, what's inside the housing? -Is it empty?
I ask since the vacuum in the crankcase isn't great. It shows a very slight positive pressure so I'd like to fix it before it gets excessive.
If the housing is just an empty chamber there's no need to buy more than the plastic part sitting on the top.
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