I'd not dip in oil... could make it slip off again... if you don't have a place closeby to order the return lines from, any weedeater repair shop should have small clear fuel line. I've used it in my SD for 6 years, and it finally started leaking this winter. put some new on, and it'll hold for another 6 I'm sure.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

^ I've been doing this for nearly a decade, no problems so far.

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83 SD

84 CD

Any home depot or lowers will have the weedeater fuel line which is a cheap quick. It did not last more than a few weeks for me.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

If you buy it from the parts store specify fuel line so they don't sell you vacuum hose, there's a big difference. It doesn't need to be fuel injection line (much more expensive) but most parts stores sell gates 1/8" (3.2mm) fuel line that works well as a replacement and you buy it in bulk by the foot.

I've never had a leak result from using the gates fuel line unless there's something wrong with the barb on the injector return fuel outlet.

As per someone elses recommendation dip the tip in oil before installing, it makes it easier.

There is also the clear line, which I've used before and kind of like it and I have some blue tinted line I got from a motorcycle shop that I like.

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Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
+ others