I disagree for the lubricant. Lubricant is a non-critical element for tech tree progression. All it really does below reactor-level technology is to ensure that specific machines don't run without a maintenance cost. On that level, the quantities you need are easy enough to come by, it's the logistics that cause the hassle. Meanwhile, at reactor level even an ocean of lubricant won't help you much since you'd need to move the pump every hour or so.You realize how unbalanced and techtree-destroying that would be, right? I already blacklisted all the fluids from MystCraft, so even if someone does add a block, it will not generate them.
This is one of those cases where I'd rule in favor of mod synergy, as well as in other cases where you have a large non-renewable source of a liquid but you need so much of it that it's pointless. For that reason, lava pumped from the Nether is not a feasible power source for the late game.