Yes, you can. Any of the leading brands will do, but I specifically prefer AMSOIL products.
synthetic to conventional - ok conventional to synthetic - no
yes
It won't take. Synthetic hair is made from acrylic or plastic.
That's okay.
No.
it is okay but i don't know why they discontinued it though
Yes it ok :)
Farting, okay?
Yes, and you can even mix them together.
yes it is fine but of course synthetic is the best to use if you can. Double check your oil requirements with your owner's manual. If it states that normal oil is okay, then go ahead. If your owner's manual dictates Synthetics, then DO NOT switch.
Bees and bears do share a symbiotic relations ship. Bees produce honey because of the pollen they collect. Bear apparently enjoy eating the honey, inducing the bees to make more honey for the hive.
Yes you can change to conventional oil.