I just did this job, with the benefit of having recently accessed oil cooler fittings, so nothing was seized. I had also previously removed the upper A/C line, if that makes a difference.

I did it without the special pipe tool, only an adjustable open end wrench. I removed the motor mount (not shock equipped) and the motor mount arm. Oil cooler lines slipped in and out easily with the motor mount arm removed.

It still took me a while to do, but if you know for you're in for the long haul (and you don't need to fuss with the lines if the arm is removed) then it's not that bad a job.

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1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition