@Listen_Up_Sonny The link you send is very nice,Thanks very much!
Yes, i understand that different ROA requires different purity, a lot of ‘‘Food Grade’’ or Cosmetic grade stuff is much impurer than Vapeable stuff, Thanks
@anon45638961 I am also doing test with that, i have some crystal resistant cbd and is pretty runny.
Thanks 
@AgTonik I believed than Diluent is like a ‘‘standard’’ of big part of the industry? (i understand that if is even the case it does not mean that is the healthiest choice)
Propylene Glycol, even in 2% change A LOT the flavour, and VG have a very poor solubility (for a cart) of cannabinoids (in my experience). Also make the oil Cloudy.
Thanks
Thanks all for your answer, i Think i will try my own ‘‘Low odor’’ Terpene blend.
For a winter mix I usually put 5-6% of terpenes, and now with summer mix 4.5% is enough, but for some people is too much flavor, maybe there are more sensitive people to terpenes.
I think i will try a little more of terpenes +CRD cbd+ some isolate Terpene.
Thanks Guys, i will keep you updated about my experiments.
PS: I just read the info in the True Blue web and is very surprising how straight and honest is the info in the article ,usually brands threat you like child or have no problems in lying .
PS2: I will look to try some CBD and CBT, I already know that they are use in CBD ditillate to avoid crystallization but i did not think about then as thinners. Thanks @stoopkid
Source: Health Canada releases canopy growth report on phytol as a diluent