Dead men drank diesel ingredient: friend The alcohol that killed three young men in Queensland was being brewed to make biodiesel, a friend and neighbour says. Only one of the four men who drank the substance on a property in southern Queensland on the weekend remains alive. The third victim, Vincent Summers, 21, died on Tuesday night. Joel Lynam, 21, died on Sunday from suspected methanol poisoning. His mate Bryan Wilmot, 30, followed on Monday. Mr Lynam's older brother, Josh, 26, remains in hospital in a serious condition. A neighbour has told AAP the father of the Lynam boys was brewing alcohol to make biodiesel on the family's property at Ballandean. Local winemaker Angelo Puglisi says the boys likely consumed the alcohol by mistake. "This 'grappa' that everyone is talking about was being produced to make diesel and somehow these young fellas got hold of it," he told AAP. They just made a mistake and whole thing's been blown out of proportion, the whole nation knows about it. Mr Puglisi said media reports suggesting grappa was routinely made by Italians in the area were wrong. He said the Lynam family needed compassion, not speculation. We should feel sorry for them, they are a family. The father has already had tragedy in his life, his wife died only a few months ago. We've got to worry about them. Sole survivor Josh Lynam may escape with minor eye damage after being fed vodka through a nasal-gastric tube, a doctor says. Princess Alexandra Hospital's clinical pharmacologist Dr Peter Pillans says the older Lynam brother's chances are good. "I would imagine he didn't have as much," he told reporters. As far as I'm aware he's doing pretty well. He may have some injury to his eyes, but otherwise I'm aware he's cognitively good. I would say he's very lucky. Dr Pillans said common injuries for survivors of methanol poisoning included blindness, nerve and brain damage and Parkinson's disease-like symptoms. The best way to treat methanol poisoning was dialysis or by giving a patient alcohol, he said, because the body will preference breaking it down before methanol. Dr Pillans explained hospital-grade alcohol was usually administered through a drip, but oral methods were a fall back. He says the hospital ran out of alcohol and they had to feed Mr Lynam vodka through a nasal-gastric tube.