spinoff of "scrape off the pv" post

[staggs65]

didn't want to hijack 03viperguy's thread but it brings up some good questions of debate

just frustrated that even with a dremel with a scotch pad I cant seem to make a dent. brand new valves with a tad over 500 miles running interceptor, just aggravating since I would go a good 2500 mile season running Yamalube and have no issues

wow...only 500 miles and they are that bad? I've run over 1200 miles since the last time I cleaned mine and they still look pretty good

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i realize there are other factors tahn the oil used (obviously) all my riding buddies and I use interceptor, with varying results, so my question is what are the variables, facts, fictions, opinions, just curious what people think