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me too. I only went with the 5100 because 300v is so damn expensive and I'm not looking for 1-3more hp.
all the 5100 I've run has been a nice clear goldish/brown color with a hint of green (from the esther).
I had to look up the 7100. on the motul website it says its 100% synthetic but on the bottle it says "esther blend." I know that 300v is a fully synthetic esther but if the 7100 is a blend doesn't that make it a semi-synth? I'm confused. how much are you guys charging per quart for 5100 and 7100?
and its got that cool green color that makes people who don't know any better think you put coolant in instead of oil.