"No oil." said George. What was the reason for the men deciding not to take oil?

From the text:

"We had taken up an oil-stove once, but “never again.” It had been like living in an oil-shop that week. It oozed. I never saw such a thing as paraffine oil is to ooze. We kept it in the nose of the boat, and, from there, it oozed down to the rudder, im- pregnating the whole boat and everything in it on its way, and it oozed over the river, and saturated the scenery and spoilt the atmosphere."