A couple of Grey nomals were motoring along the Birdsville track. He was driving and she was catching flies in her open mouth while catching up on 40 winks. The old man glanced down to the instrument panel and noticed the oil light starting to flicker. A few minutes later the oil light stayed on so he started to pull over to the side of the road. This woke "she who must be obeyed" and she asked what was wrong.
He:The oil light is on.
She:What does that mean ?
He: It's not a good sign.
He opened the hood and dipped the stick and discovered no oil.
He crawled under the rig and noticed a stream of oil leading back from a small split in the sump.
She: What's wrong
He: Bugger, no oil, we must have split the sump when we hit that rock a couple of k's ago.
She:Are we in trouble and what are we going to do.
He:We will have to wait till someone comes along.
Several hours go by and after several cups of tea later, no one came along.
She: I might have some oil we can use.
He: I can fix the split in the sump long enough to get us out of trouble with the old "bushy" remedy of soap and petrol - what kind of oil have you got and how much.
She: You know how I suffer from arthritis in my knees and I use goanna oil, well when we were in Birdsville they bad a special on and I bought 4 litres.
He: Go and get it and lets have a look.
She goes in the van and brings back a 4 litre bottle. He removes the lid, sticks his finger in to test it and says, this may be ok.
He fills the engine, replaces the filler cap, closes the bonnet and starts the engine. The loil light goes off and stays off.
He: Quick, hop in and lets get going.
Well bugger me, 500 metres down the road, the car runs off the road and runs straight up a tree !!!