96 850 turbo 170K is leaking oil from turbo. Exhaust smokes heavily when accelerate from stop light. Also experienced a significant drop in MPG. Mechanic says oil leaking in 3 places and oil in turbo system and wants to replace complete turbo. Already had turbo and rear main seal replaced at 130K. This time though, no major exterior oil leaks under rear main seal. Pretty reputable/reliable mechanic but can't really afford $2000 in repairs right now. What should I do?
1. Fix all leaks and replace seals
2. Fix all leaks and replace seals, replace turbo
3. Fix all leaks and replace seals, rebuild turbo
4. Other options
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