i thought about it, but too much risk for an amateur like myself to make a hole to the sump, also you have to know where the oil level is exactly so you know where the drainage will be thats from provent brochure:
1. Below the oil level
The oil return is connected
via a drainage pipe below
the minimum permissible oil
level of the engine oil sump.
According to the principle of
connected pipes, the same
oil level is present in the oil
sump and the drainage pipe.
This oil receiver acts like a
siphon so that when the oil
is sucked from the outlet port
the blow-by is directed via
the oil separator. The negative
pressure in the oil return
pipe during operation is the
same as the negative pressure
at the oil separator. As
opposed to conventional
solutions, this intake negative
pressure is reduced due
to design considerations so
that the height of the oil
column in the drainage pipe
during operation is accordingly
low. As a result the
drainage pipe need only take
into account a respectively
low oil column and this enables
numerous installation
possibilities.
2. Above the oil level
This connection variation
requires fitting of a check
valve which is available as
an option. The valve is fitted
in the drainage pipe as close
to the engine as possible.
Separated oil collects above
the check valve during operation.
The check valve is
closed during operation by
the negative suction pressure
present in the housing
of the ProVent. When the
weight of the oil column is
above the closing pressure
of the valve, for example
when the engine has been
switched off, the separated
oil flows back to the oil
sump.