Hi Falcon,

The rate I quoted is probably at the higher end of the range. It comes from the calculation of oz pr min = 2 x CuIn which is what TME suggest as the max oil flow
So 4-6oz per minute from a 16oz tank isn't bad (3 - 4 minutes of smoke)

In the past, I have used a 50-50 mix of liquid paraffin and baby oil but recently been using what is called "Summer Spray Oil" in Australia

I found this TDS for what seems to be the same stuff but mine comes through Castrol
http://www.tds.castrol.com.au/pdf/45...il_09_2003.pdf

Skywriters apparently use this a fair bit

I found that anything based on Diesel or Kerosene is very hard on the covering of our planes. If you use that (any smoke fluid for that matter), re-seal all seams on the parts of your plane that are exposed to the oil residue