London, Oct 18 Environmental campaigner Andy Pag who is trying to travel around the world in a recycled scrap yard bus powered only by chip fat has reached Asia.

The 34-year-old adventurer, from London, crossed from the European to the Asian side of the Istanbul Strait on Friday, reports The Daily Star.

Pag left London on September 19, and since then he has covered more than 3,000 miles through France, Switzerland, Italy, Croatia, the Balkans and Greece to reach Turkey in the bus.

In that time he has collected more than 500 litres of chip fat and biodiesel made from used cooking oil to put in his tank.

He said: "Crossing the Bosphorus is a real milestone. I'm actually quite relieved to have made it this far, but it's only going to get tougher to find used cooking oil to fuel the bus from here on."

Pag added that the bus is using more fuel than expected.

"It's a bad example of a type of bus that was never particularly efficient when new," he said.

"It's noisy, uncomfortable, slow, and it smells like a bus driver's armpit, but when you are using rubbish you can't expect too much," he added.

Ahead, he will have to compete either with the insecurity in Pakistan or the cold temperatures of the Kazakhstani winter, which risks solidifying the fuel into a greasy mess. (ANI)