If anyone has documented reference material that can be used to back up some of the above statements I promise to change my 'practice'
From Bell 407 Maintenance manual Chapter 12.
If the oil pressure fluctuates and oil foams,
drain the engine oil system (Paragraph 12-
15) and replace the oil with new oil.
If you use oil stored in small containers,
shake the container to mix the additives
before you pour the oil in the engine oil
tank.
Is in every turbine engine maintenance manual that I have used.
SteveF - using an ad hominem in this argument is adds nothing.
Cheers
BH