The time has come for our 1995 850 turbo sedan to need a rear main seal. This is after 180+k miles and 15.5 years in our hands. Everything else is in good condition. Since a rear main seal is beyond my expertise of working on a car, I am wondering whether you have any opinions/comments on the following questions:

1) How long could we drive the car the way it is? At this time, it leaked one quart after 2000 miles. (It never ever needed any oil during the past 15.5 years, while we followed a 2,500 mile/conventional oil-change schedule.)

2) Should we have it fixed at an indy mechanic I trust and who asked for ~$650, but he would not give any warranty for this work? (He said that given the age and miles of the car, it might leak again soon.)

3) Should we probably continue keeping the car, after we have it fixed for ~ $1,100 at the local volvo dealer?

Any opinions/comments on the above (particularly on item #1 above) would be greatly appreciated. Thanks.

1995 850 turbo sedan, a really great car
2006 S60 2.5T, a really nice car my other half likes very much