"We all got bonuses every time a well was sunk and they struck oil."
He said earlier this year, "when the barrels were $50 each, prices should have dropped down to a dollar but they never went below $1.70 a litre".
"Last night on the telly oil was $58, down from $62, but we're still paying over $2.09 a litre at the pump. It's not all relative. Where's the extra money going, that's what I'd like to know."
Mr Murphy suspected it wasn't the service stations making the extra profit.
"It's not them to blame - they don't make much."
He said the couple who ran the G.A.S service station in Eketahuna were "lovely" people who were always going out of their way to help others.
"The fellow and his wife start at 6am and virtually work 24/7 and they do so much for the community it's unreal.
"He's out chopping wood for old people and volunteers for the fire brigade, they're the first ones there if anything happens.
"I'm an old pensioner and every penny counts," said Mr Murphy, 76, who was a professional wrestler, known as Doctor Death, from the 1950s until he gave it up in 1984.
"I believe the New Zealand public is being ripped off by government and the petrol companies."
"It just annoys me," he said.