Congrats! Still some nice weather left. Enjoy

That oil needs to go ASAP as well as the filter,the fuel causes a washing effect and dislodges muck and carbon in the crankcase,your filter is most likely partially blocked anyway.
As mentioned fuel is a good solvent but a poor lubricant,another oil change will be cheap insurance for your rebuild motor,I have to agree about the Castrol oil I won't run it anymore,what have they done to it?????.
Try to get some more miles on the engine before your winter layup and that smoking should clear up,if not you will have to re-ring the pistons.

Congrats. Hope the fuel dump didn't hurt the engine.

Glad you got it fixed.
Hope you dont shy away from the forum because of all the drama.

Most people here seem to be really passionate about there 914 and really want to help.

Congrats. The last thing that is needed is to change your oil to a formulation that contains greater than 1300 ppm ZDDP. That eliminates all automotive oils made for domestic road service. You''ll need to source a product meant for racing or off road use. Products that meet these criteria are offered by Brad Penn, Joe Gibbs, Mobil and others.

Or, you can purchase Mobil 1 V-Twin oil formulated for motor cycles. V-Twin is available in 20W50 and has ZDDP greater than 1300 ppm. Since the oil is formulated for air cooled motor cycles (which are not required to use catalytic convertors) it will work fine in any Porsche air cooled engine.

But, before going to a multi weight oil, consider completing the break in of your engine with Brad Penn 30 wt Break-in Oil. Install this oil to complete the first 500 miles of engine running. Run the car hard for the 500 miles (not exceeding 5000 rpm) before changing the oil and filter and going to a proper multi-visc oil.