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Do I need to drain/fill trans again?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

JimBee
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Do I need to drain/fill trans again?

Post by JimBee » Tue Oct 15, 2019 11:23 am

My 96 855 auto trans has had at least 4 drain & fills over the last 5 years. It sits for long periods while I drive the other 850. When fully inserted in the tube, the end of the stick is almost horizontal.

Yesterday, I pulled the dip stick and expecting to find nice clean fluid (like it appeared when I changed it last year), the fluid that settled on the top side of the stick looked dark and sooty, while the fluid on the bottom side was nicely clean and pink.

Since the car hasn't been driven much since the last drain and fill, and the fluid was clean then, I'm wondering where that soot came from. What gives?



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greg850r
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Re: Do I need to drain/fill trans again?

Post by greg850r » Tue Oct 15, 2019 7:36 pm

A drain and fill 3 times sort of equals a fluid change. When you say 4 done over 5 years do you mean each of the 4 drain & fills was 3 times or once? If once, I would do it again.


05 Cross Country wagon
99 C70 Convertible
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96 850 GLT 5spd N/A sedan
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66 GTO 421SD 4spd
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JimBee
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Joined: Tue Dec 09, 2008 9:23 pm
Year and Model: 93 and 2 96 850's
Location: Minneapolis
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Re: Do I need to drain/fill trans again?

Post by JimBee » Tue Oct 15, 2019 10:23 pm

Good point. A full gallon drains each time, so total changed would probably be 4 gallons. The soot on the stick does indicate there's still some present, so maybe needs another round.



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