Im getting ready to do a full fuel system refresh (clean tank, new rubber lines, getting the dang fuel filter bolt not too leak ) in preparation for B100. Should I replace my hard plastic fuel lines near the IP while I am at it? Mine are now tea colored...but they aren't leaking or doing anything bad.

Have not seen much on the subject, so I am guessing they dont often require attention.

Thanks,
dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car