I want to change the fuel filter and the fittings wont brake lose.I think this has got to be a common problem.Usually when somthing does not want to come apart I grab the torch.Not an option this time.I soaked it with penetrating oil for two days before I tried the first time.And yes I am using tubing wrenchs.I'm woried about screwing up the steel fuel lines or the fittings.Come on Guys, what's the secret on removing this thing.
Dave

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92RS LO3 700R4
open air element
ultimate TBI mods
LT1 cam
Edelbrock TBI performer manifold
180 thermostat
Hooker headers
3"cat back
Zexel Torsen posi with 3.42 gears

Sounds like you've tried what I would do. The only other thing I might suggest is supporting the filter with one hand and lightly tapping on the nut area of the filter with a brass hammer (or any small hammer). The object is to jar the fittings loose, not pound them loose. Good luck! It sucks when simple things cause such a fuss don't it?