View Single Post
  #3  
Old 05-09-2016, 01:35 PM
mach4's Avatar
mach4 mach4 is offline
Registered User
 
Join Date: Jul 2011
Location: San Diego County, CA
Posts: 2,736
The obvious answer is to use real diesel, but barring that you might try polyurethane. If I suddenly found myself in a situation where biodiesel was the only available fuel (and living in CA, that's unfortunately not beyond the realm of possibility) I would try some two-part polyurethane brushable mold material EZ-Mix® 40 Brushable Urethane Rubber Compound In a molding application you'd use a mold release agent, but as a coating, urethane is a pretty effective adhering and should hold up pretty well as a barrier.

Attached Thumbnails
bio and fuel filler neck seal grommet-image.jpeg  
__________________
Current Stable
  • 380SL (diesel)
  • Corvette C5
  • Manx
  • Baja Bug
  • F350 Powerstroke
  • Auburn Boattail Speedster replica
Reply With Quote