Folks, Jim at fryerpower said to may try the lined fuel lines from JC Whitney. I've got mostly Viton now in my biobuggy, except for the return/supply lines in the engine bay, and the short rubber line off the tank filter.

I saw some viton line at MCMaster, but wasnt sure which one to use. At $5 a foot, I hope not to replace it again soon.

Anyone used the lined fuel line from JC Whitney? Or exactly which line do I use out of the McMaster catalog?

THNX!

The $5 stuff from McMaster is 1/8" wall and is really flimsy. You don't want to use that. The lined stuff is much cheaper and more durable. You want SAE30R9 rated hose. It it viton lined. Greaseworks sells this hose in bulk, and often you can find it in your local parts house. Just make sure it is SAE30R9 and you'll be fine.

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I have been told by the MB parts guy, although I have not verified this for sure, that the new MB fuel hoses from the dealer are viton lined.

I have replaced the original hoses all with the supposedly viton lined stuff from the dealer last year - no sign of leaks or problems thus far.

But if there is a good mcmaster equivalent found Id love to know about it. It's expensive guessing game to find the right hose from McM-C :-)

dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car

I am using Tygon brand from Mcmaster; not sure about the part numbers but I will look them up. I bought both supply hose from the tank and the little return hoses for the injectors. Both were relatively cheap and good quality (we use loads of Tygon hoses in the medical world). The ones I bought are rated for diesel fuel use.

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'98 E300 DT
'87 190D 2.5 turbo RIP
'92 S500 Sold
'03 3.2TL-S A-Spec

Watch the temperature ratings for Tygon. There is more than one option and I don't know how hot you need for the return lines. IIRC, the yellow tint Tygon has a higher heat rating.

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Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/showthread.php?t=296386

I got some thick wall viton hose from mcmaster that is working great. I'm about to buy a $200 roll and sell pre-cut kits.

The stock MB lines are defiantly NOT viton lined, and with the ULSD they seem to start leaking too quickly.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

And high qual hoses from Carquest are starting to show some issues. One is abraided, against the IP, which is no fault of the hose. But since I have to replace them in a bit.... thnx for the replies...Andrew thnx for the spec, it'll give me someting to go on...

gulp. im using bio-d, so my leaking will happen sooner rather than later. great. i know of no alternative for the screen on tank fitting though...

dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car

Try Goodyear/Parker, I get all of my hoses made there. Just tell them the application, drop the credit card and be happy.

My local AutoZone had the SAE 30 R9 in stock,if i remember right it was about $4.00 ft.They had the 5/16 dia and i think they referred to it as fuel injection hose. Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles

Right; I bought the ones with the yellow tint.

Here's the info page from their website:

http://www.mcmaster.com/#tygon-f-4040-a-tubing/=ippme

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'98 E300 DT
'87 190D 2.5 turbo RIP
'92 S500 Sold
'03 3.2TL-S A-Spec

So we have "mellow yellow" lines , and blue lined lines.

Here's the specs on the 30R9

http://www.goodyearep.com/ProductsDetail.aspx?id=5144

I like them clear, but the yellow tint does the job: it lets me see if there are air bubbles in the system.

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'98 E300 DT
'87 190D 2.5 turbo RIP
'92 S500 Sold
'03 3.2TL-S A-Spec

I got mine from jadavis on this board.

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91 350SD
14 F150 Eco
19 Fusion Hybrid
11 GT500

Not the 5/16" feed lines you didnt. I just picked up a full set of Viton Orings from Jim, he doesnt stock fuel line, just return line. The Goodyear 30R9 is available thru AutoZone according to their website. By GY's own spec sheet, its biodiesel proof.

I'm not worried about air bubbles in the supply/return lines. One of the best things you can do is get the Viton orings from Jim and seal that prefilter but good!