Originally posted by RogerB:
I don't know the answer, but I do know that you contradict yourself in this post. First you're getting more power because of better ring seal, then you're being told by the gov to run thinner oil because it:
1. Has less parasitic drag on moving parts (=more hp)
2. Puts less strain on the oil pump (=more hp)
3. Burns gasoline more efficiently (=more hp)
I don't know why Flecha is getting the results he's getting, but it is absolutely counterintuitive.
Better ring seal is increasing compression which is increasing the power from the gas that he is already burning in the first place. But the increased drag on the parts inside the engine (including the oil pump and oil slosh around engine parts) is causing him to have to burn more gas to overcome that loss. Perhaps this is the EPA's logic behind why they seem to want everyone to run thin oil. Because manufacturers can also set higher static compression ratios to counteract any compression losses as well. But moving oil around will always cost a certain amount of power to move around. I don't know the exact reason to everything, but I DO know that the EPA was responsible for this whole shabang with the thinner oil viscosities.
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