Oil foams up once put into oven at 85°F

[Toaster0420]

I'm running a closed loop system with 70/30 butane and everything runs fine. The oil comes out looking beautiful during pour! Once I introduce it to the oven, within 10-15min it starts to foam up and I have no clue why?!

Please HELP!

Thank you!

 

[Ponky]

A vaccum purge oven? And lab grade butane?

 

[Habosabin]

I'd imagine the residual butane is gassing off.

 

[Moe.Red]

I'm confused why you would bake it at 85*? What are you trying to accomplish?

If this was 250* I'd say you are decarbing.

Obligatory PLEASE BE CAREFUL WITH BUTANE. Not trying to be rude, but this is not something you should be experimenting with at home unless you fully know what you are doing. Even then, people have burned their house down using this method. A spark from a refrigerator compressor kicking on is all it takes to go boom.