[peterwoods@supanet.com]

There is certainly engine oil on the windscreen at 5:10, but there is also the green liquid referred to as "Predator's Blood" by Aquarious. Could this be engine coolant? The Mk XII Merlin used a 70/30% water/glycol mix which improved cooling and also avoided the risk of fire from pure glycol used previously. The bright clear green colour is achieved by adding potasium permanganate to the the glycol to persuade fools from drinking it. Ethylene glycol is toxic, and ingestion can result in death.