P.E.Haiges,
A question about the brown, silicone stuff in the gas tank. I did a cleanup on my fuel sender last summer, and I noticed it was all covered with that stuff, preventing the float from working smoothly. I then cleaned it off, and the sender has worked great since. I have never used any type of biocide, just the usual fuel additives. My question is, if the brown stuff was covering the float, can I assume the strainer looks the same? Over the years, I've only seen the black stuff, from time to time, in the secondary (clear)fuel filter, never anything brown. Any thoughts? Thanks!

SteveKaa
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1982 300SD 337k miles