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Not knowing when last the transmission fluid/filter was changed, and based upon what I've been reading, I can expect to drop from 3.5 to 7 liters of fluid. I'll purchase two 5 quart jugs of Pentosin. The question(s):
When should I replace the filter?
1. Should I drain... install filter... fill... drive... drain... fill?
2. Drain... fill... drive... drain... install filter... fill?
The two "drains" are because I'll have 10 quarts... the first drain lets say 5 quarts... likewise the second drain and fill. I'm not looking to completely flush the system five times instead introducing new fluid in a couple efforts.
I'd like the new filter to have the "cleanest" fluid running through it... so I'm thinking the second scenario. Maybe I'm overthinking this?
Thank you.
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1998 Porsche Boxster
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