Herb Tarlik wrote:
moby wrote:
Herb Tarlik wrote:
moby wrote:
Blackhander wrote:
The fact that Mercedes denied they were burning oil deliberately in their engines then turned around and asked for the FIA to mandate a maximum fuel burn over a race period to 5L is what makes me almost certain that they are indeed doing it... That's massive!
Way back in 2014 Ricciardo was disqualified for exceeding the 100kg/h limit by 2 percent and yet staying well under the 100kg total limit. If it turns out to be correct then it is possible that perhaps this entire time Mercedes engines have been exceeding both the instantaneous limit and the 100kg total limit (the latter only on certain fuel hungry races). 5L is massive considering that oil is far denser than fuel and could explain a lot in regards to where exactly some of that power advantage comes from.
It'll be very interesting to see where this goes, hopefully it doesn't just get swept aside.
5 ltr is a huge amount. In that case I stand corrected PRFan, it is worth burning as fuel.
Also, 5ltr of oil is over 5kg, which can be replaced before the car is weighed post race.
5 liters of oil is less than 5 kg. 5 liters of water is 5 kg and oil weighs less than water.
Crude and light oil is usually 9.5 sg ish but some motor oils with additives can be 1.2. (additives are often metal)
We can meet at 9.5 if you like but not much in either direction
I've been working in the lubricants field for just shy of 25 years and can recall only a single mineral oil lubricant that had a specific gravity over 1.0. This one had a fluorocarbon based base oil, completely without hydrogen. Every hydrogen was replaced with fluorine. The density of this was nearly 2.0. It was amazing and the products made with that were phenomenally expensive (sold by the 20 ml syringe as a formulated grease which could operate at 60,000 feet or higher), used only by NASA and the department of defense. The fluorocarbon base oil cost in excess of $2000/liter.
My point is that it is virtually impossible to have a finished motor oil at a density of 1.2. 90% of the oil is base oil, with a density of 0.8 or less. The remaining 10% of additives invariably will have a density *at most* of 1.2. That will never move the overall density anywhere near 0.9, much less 1.2.
I am working from memory, so probably wrong, but what was Mollyslip? I thouhjt it was one of the few over 1?
Ah, I see what I have done, I have 9.5 instead of .95

(wet lunch and a long time since I had to work)
However as I said, even if it was .8 which is reasonable for a lube, not fuel, that is still running 4KG under weight and I seem to recall Prost being DSQ'd for being 1KG under weight?