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Anybody seen or heard or this? Is it a gimmick or does it make sense seem to me its using the same capacitance that some GM vehichles use in their monitoring systems any ideas? Link:http://www.lubricheck.com/

I have a '06 sportster 1200 Custom and I'm not sure what to use for oil in the crankcase or the primary/transmission I've heard all sorts of opinions I want to hear from people what have you used and what worked or didn't work? I'm looking at mobil1 vtwin 20w-50 or valvoline vtwin 20w50 also...