That is pretty much what the canadian doc in negril used.
The sound of fizzing increased and a slight warmth was felt.
At that point he let loose with the syringe and the compacted wax was ejected with ease.
I have had my ears syringed hundreds of times, in many countries and in many different ways.
If the wax is compacted, hot oil wil not even look at it.
My hearing is perfect, I think the detractors of "syringing" are all being a bit lighweight.
It depends if you want to solve the problem or just faff around.