No, you're OK, better use 'PG' to abbreviate for propylene glycol, though, as the word "glycol" by itself refers to ethylene glycol.
You're fine using PG, it's a superior solvent for DMT when compared to VG.
My point is that nomenclatural precision is rather important in chemistry!
[Glycol (ethylene glycol/ethane-1,2-diol, (CH₂OH)₂) was named after glycerol (propane-1,2,3-triol, CHOH(CH₂OH)₂), because it has two-thirds as many carbon and oxygen atoms as glycerol, and "glyc-" has two-thirds as many letters as "glycer-" - no joke!
The term glycol was then expanded to refer to any compound with a pair of hydroxy groups on two adjacent saturated carbon atoms, similar to the way "aldehyde" originally referred only to what we now know as acetaldehyde (or ethanal, CH₃CHO) but has been generalised to any compound of the formula RCHO.]