I was in Goulburn yesterday and interested to see that petrol was 10c a litre cheaper than Canberra. I filled up before leaving at $1.28.9 in Canberra and wish I didn’t bother as it was around $1.17.9 in the Goulburn main street (admittedly that may have been after shopadocket discount).
If you’re heading to Sydney and don’t mind a short detour, it may be worth waiting to fillup and save a few bucks, especially if you plan to call into Maccas anyway.