We are removing the k16's and have had no problem getting 2 of the oil lines disconnected. The top fat line that goes to the oil tank when we are trying to unscrew the whole line is twisting and we cannot get it disconnected. We are trying a loosening spray, twisting back and forth but don't want to bust the line.

Any suggestions?

 

I have not done much work on Porsches but, I had a Audi S4 with a similar problem.

First make sure you protect all surrounding areas wiht non-flamible material. Then try applying a mild hand held mapp gass or propane torch to it. You can watch the metal discolor and it should expand slightly. Becarefull as the lines are thin and many adjacent materials are flamible or have flamible fluids.

Having a second hand with an extinguisher is a good idea.

This method is not for noobs and should only be attempted as a last effort!