Volvo Repair: Fuel line/leak, fuel leaks, intermittent loss

Question
I have a 740 turbo wagon, 1991.  I keep up with maintenance & just learned to do my own oil changes.  Last visit to mechanic, recommended Motorvac to flush out particles, etc. from gas, keep fuel injectors from sucking it in & since have 253,000 miles, said it was due to have this done.  Last 2-3 weeks, had intermittent loss in acceleration from stop to second then, would "catch" and do fine from 30 miles up.  Scheduled apt. for 3/31 then car doing better, making sure not to let it get low on gas -- now suddenly fuel leak from right under driver's seat area.  Due to rain, haven't been able to look under, but will take bus to work next 3 days then take to shop.  Can you tell me where possible fuel lines are that may have come loose?

Answer
Hello,
     Fuel leaks are caused by either a rusted or damaged fuel line.You have a excellant large fuel filter that should be changed every 15,000 if you use reg.gas...if you use prem. gas every 25,000 miles.
     DON'T CHANGE YOUR OIL!!Let a person who is set-up to do this job do it...What do you do with the old oil?Changing oil is a lousy job...pay someone the 29.99 to do the job.DO NOT USE A FRANCHISED QUICK LUBE....they often hire kids to do the work and they often make mistakes like stripping out your drain plug...lecture is over.
         You may add a can of injector cleaner to the gas tank,it's a good idea...chances are you may need to look  at  your fuel injectors.They lose their nice spray and drip causing poor performance.      
      You are a GOOD person for not driving your car with fuel leak.

                Good luck,
                           Bilbo