You really need to clean up the oil under the plastic cover over the spark plugs. That is where the spilled oil sits and slowly gets burned off when the engine gets hot. Do not remove the oil cap unless the engine is off, the resulting spray is bad and goes everywhere.

Your biggest concern regarding crankcase pressure should be at the PTC nipple. But save that for warm days, it is a pain to get the clamps off the intake tube and even harder to get back on when the plastic is cold.

When the turbo oil return line leaks, it will be in drops and not a gusher! You will notice a few dime sized drops on the pavement under the car after sitting all night. There are times when the drops fall on the exhaust and burn off, but that is so little so as not to be concerned.

Klaus
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Always willing to listen, just not able to take direction.