I was able to buy cloth-wrapped viton hose for a bit less than $3/foot, and replaced all the return lines on my six-cylinder with about 42" of the stuff. On a Benz, that definitely qualifies as cheap in my book, but I'm not sure what your standard is. Plus, I've got some tubing now that ought to last a long time, even running B99.

Cheers, John

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