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Let's all get together and stop using it for a month. They will lower the price or eat the extra production. Mass production does have it's advantages.
I guess all good things must come to an end at some point. who's going to crunch #'s to see if it's still cost effective? (it's 3:20am here and my brain wont work)
they are haveing to adjust the mixing so it will be more friendly to the emissions of the new diesels and will not harm the soot filters.
good thing I stocked up when the price was down. The return margin might be lower, and I think the main reason for useing it would still be to help keep things lubed and running smoother.