Remember being a kid and if someone was using creosote you could smell it a street away.
They changed it now I think.
My mate mixes that with used engine oil 50/50 and said it's great.he's got a 20yr old fence that hasn't rotted 1 bit using that mix.
Get the used tractor oil from the yard and mate and mix that with your creosote..best thing is the used oil is free.and probably better for wood than anything you can buy.
He did say that the colour is very dark not black in colour once on the fence but not far off.