This is the hose that goes from the drier to the expansion valve. Since it's a liquid line, does that mean I don't have to worry about gases leaking through the pores? Though, it sounds like it's probably absorbed enough oil by now to seal it.

I'm thinking I don't want to mess with it, but then again I'd hate to have it leak. But it fits so nicely and I don't know if I can get a new barrier hose that will fit the fitting at the drier, and also onto the expansion valve--and is also the right thickness to still fit on the clamp on the body and the grommet in the firewall.

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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles