One thing that I find interesting:
Petroleum products eat rubber products. (Evap hoses? PVC hoses? All get destroyed over time.) Yet, I notice that companies and members on the various forums say to put a little oil on the grommet for ease of installation? And on a parts web site, they show a guy spraying WD40 on the filler neck and grommet?
I know that it would be partly submerged in gas at times, but on the outside of the grommet, where it would otherwise remain dry, that applied oil or WD40 still cant be good for it. Not to mention that gasoline eventually evaporates while oil and WD40 do not.
When I did mine, I just wiped everything clean and installed it. No issues.
89 Mustang LX 5.0 Coupe, C4, stripped, etc.
95 Mustang GT 5.0, IRS, 3550, etc.
03 F150 FX4 Supercrew 5.4, Lariat, lifted, etc.
06 Focus ZX4 2.0, MPG!
Last edited by kbernal1016; 11-03-2011 at 03:36 PM.