It was a brilliant answer mate. Definitely informative. My Dad used to paint all the fences and multiple sheds with old sump oil. It's a very effective preservative, also, I assume fecking dangerous.
Didn't everyone's dad use old oil? To be fair I can't imagine it's much/any worse than creosote given that its a mix of distilled tars from my understanding
It was a brilliant answer mate. Definitely informative. My Dad used to paint all the fences and multiple sheds with old sump oil. It's a very effective preservative, also, I assume fecking dangerous.