I am working on my
brother’s survivor 1969 Coronet
R/T convertible and I removed
the fuel tank to put in a new one
from Rock Auto. Thanks for the
discount code by the way [send
e-mail to radiscount@richardehrenberg.
com – Ed.]. The filler
neck gave me real problems
trying to get it out. When finally
removed, I discovered that
the inner end of the filler neck
was covered in some kind of
red sealant that looks like it’s
made of vinyl. I have a new
Mopar filler neck seal and I am
wondering if I need to seal the
filler neck to the new seal. The
factory service manual makes
no mention of any kind of sealer
being used. From the look of
the tank I don’t think it has ever
been out. Is this red sealant
something the factory did and if
so what kind of sealant is it?
It appears that the reason the
OEM tank lasted as long as it
did was that someone slopped a
can of sealer “goop” inside. The
filler neck was galvanized steel,
no sealer whatsoever. I typically
use either a schmear of silicone
grease, silicone spray, or soapy
water to ease insertion.
Clean the tube off thoroughly
with whatever solvent “cuts”
the red crap – possibly lacquer
thinner, acetone, MEK, and do
as I do. If at all possible, do not
use a wire brush, blade, or anything
else that would damage or
remove the zinc.