Back to above problem of Oil drainage line:
" Oil outlet pipe got a big trouble due to outlet is lower than oil pan level, it always full of oil inside the pipeline==> I consider to install a small diaphragm pump to transfer drainage oil back to engine, take the engine air suction pipe to run this pump"
Update on 10 Aug:
Small diaphragm pump took from a car's fuel pump did not work
It is solved perfectly with a electric gear pump. Drainage oil is pumped from turbo oil outlet line back to engine (Need to do an adapter at oil filling position)
