Oil is dark brown, almost backish, what does it mean?

[Weezard]

Thanks for the info.

Is it correct that if the oil is purged in an oven, CBD & THC will be turned in CBN?


No, than is not correct.

If using Butane and no solvents, could it contain heavy metals?

Very unlikely

If getting an oil, one suspects contains heavy metals how to purify?

No can!
Get your oil from a different source.
Contact Phoenixtears for more information.

I up dosed from a pin prick dose of RSO to about twice this last night. Again, horrid sensations, palpitations and insomnia... Does this means THC is higher in this oil? (It was bought, too ill to grow my own).

More likely it means that you are either exceptionally sensitive to Cannabinoids, or it's time to have that oil tested by a lab.
If you intend to get oil from that vendor again, it's worth the cost of a chromatograph to verify it's content and purity.

You have a lot of reading to do, my friend.
Aloha,
Weezard