I know in US we have switched to very low sulfur fuel... I think... I
remember we had a fiasco when we did that long ago and all fuel lines
started leaking. Well, mine did... and at alarming rate and systemwide...
I know on my car, it was all original and needed changing... but whoa...
this is massive everywhere. So, do any of you have this problem lately?
What year is your diesel, Tiger? There's a decent blurb on the Chevron
website about low sulfur fuels and possible fuel leaks at
California reduced the sulfur some years ago and there were many
complaints - mostly caused by old dried up "O" rings and hoses.
My '80 300SD sprang a small leak at one of the fuel lines to the fuel
tank. It was replaced and no further fuel leaks - anywhere; that was at
least five, if not seven years ago.
These leaks are something to watch for and are annoying but not
catastrophic failures that leave one stranded.
The only leaks I've ever had on my 80 300SD have been the fabric
covered type of fuel injector return lines. Don't know if it was
related to the change in fuel. But now that you mention it, they never
leaked for the first 10-15 years, but after that, were a constant
problem. Replaced with merc hose, they last a couple of years, then
So, I got some plastic type fuel line and replaced it with that. No
Not sure of the exact material. I just took a piece of the old hose to
the local NAPA store and had them match it. They cut it off a spool
for me. It's semi-transparent, with a yellow color, very flexible and
rated for fuel use. Seems similar to clear vinyl type flexible hose
that's used for water. But obviously it's made of something different.
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