2017-09-03 05:05:26 UTC
Discussion turned to oil burning. Now, bear in mind that they don't KNOW what is going on inside the engines, this is a game of deduction, but some things were presented pretty confidently IE that everybody burns oil and that there are legitimate reasons why this should be - mostly to do with lubricating the bearing to which the piston is connected.
They also stated fairly firmly that the "oil" is not a lot like what you or I put in our cars, it is very highly refined, has a very low viscosity and a relatively high calorific value. It also suppresses knock, or has additives that do that.
They reported that Merc are already at or below the new limit whilst Ferrari were still burning more at Spa. So suspicion, again, falls on Ferrari.
They discussed the matter of injecting into the combustion chamber or with the charge, then switched to an idea of Symonds', that there is a way that Merc and Ferrari have been feeding oil into the combustion chamber via the turbo. There was no suggestion that this was outside the letter of the law.
The benefits of this are
1) Knock is reduced, which, they say, allows greater turbo boost.
2) You get bigger bang per buck in each detonation
This is a grey area. It's not what FIA anticipated or wanted, but it is not forbidden by the regulations either.
Classic F1 engineering thinking: spotting a loophole in the rules and exploiting it for all it's worth.