The word "pour" is transcribed as "pɔː."
How is it transcribed when it is followed with a word that begins with a vowel?
For example, is it /pɔːr ɔɪl/ or /pɔ: ɔɪl/?
The word pour is frequently transcribed as /pɔː(r)/. The '(r)' means that the /r/ is usually pronounced in RP only when it is followed by a vowel - as in "pour oil".