Interesting -- product directions said to put it in the spin-on to get it straight to the injectors. Makes sense to me, as there's no closer (practical) way to get to the injection pump. I wasn't up for all the work of a diesel purge kind of thing, and just wanted to give it a whirl -- caught a sale at the local auto parts store on the stuff. So if I've got a little bit of additive in the tank, I'm not too worried.

Cheers, John

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'98 E300TD (W210) | Sold 6/09 with 205k and counting
'04 VW Touareg V10TDI