2008 XC70 Service Intervals
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    1. #1
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      2008 XC70 Service Intervals

      So it looks like I'm about to become a Volvo owner again. I found a 2008 XC70 with just under 110,000 miles on it that looks and drives like a new car. These things are pretty impressive. It has a pretty good record of service but it appears that it mostly followed the factory recommendations. My guess is that the transmission fluid has never been changed. Any concerns with changing it at this point? I've never subscribed to the theory that changing fluid on a high-mileage transmission can cause problems but wanted to ask if anyone has found otherwise with these transmissions. I had a 2002 V70 that had never been serviced before I bought it with 140,00 miles and it flared and slammed into gear until I serviced the solenoids with a TransGo kit. Hoping to avoid that with this one, although for $58 it was the cheapest transmission fix I ever did and it's still running perfectly 2 owners and 100,000 miles later. What service intervals should I use for the differentials and Haldex? Are there any typical failure items I should replace now? From my research on this model, it doesn't seem there are too many serious trouble areas.
      1998 V70 T5M - SOLD
      2002 V70 - SOLD
      2001 V70 T5M, TME Springs, 216,000 miles - SOLD
      2008 XC70

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    3. #2
      Junior Member
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      Sep 2018
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      I bought a 2013 XC70 T6 at 104,000 mi., dealer serviced.

      I changed the tranny fluid, just prior to taking it to the dealer for post-purchase all-points inspection, requesting to have the Transmission Control Module counters reset to 0.

      I did the AWD services (3) myself. If you plan to tackle this, PM me for details.

      You'll enjoy all the DIY videos created on YouTube by VolvoSweden, his is a 2009 XC70 T6.

    4. #3
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      Thanks. I'm not sure if I will do a full tranny fluid swap or just do the drain and add a gallon routine over a period of several thousand miles. Looks like I should go ahead and do the serpentine belt, tensioners, water pump, thermostat and vacuum pump rebuild now as well.

      The engine didn't whistle so the PCV likely hasn't failed yet, but I'm wondering if I should go ahead and service that as well so I don't have to worry about it for a while. Has anybody tried replacing just the diaphragm rather than the entire trap? ipd sells one for around $19 which is around $170 less than the trap.
      1998 V70 T5M - SOLD
      2002 V70 - SOLD
      2001 V70 T5M, TME Springs, 216,000 miles - SOLD
      2008 XC70

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    6. #4
      Junior Member
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      I also like the "many drain-and-fills over a long period of time" transmission maintenance method, esp for older transmissions. I also have a 2008 and have been doing this with (pretty much) every oil change for a few years.

      Apart from the expense and time yes I agree on the READ/Serpentine belt + accessory running gear change + thermostat. I'm lining these things up for myself actually.

    7. #5
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      Looks like the thermostat can be done without pulling the intake which is good news. Not sure which hoses I need to get though. I want to replace the ones prone to fail while the coolant is drained. Also, Dorman sells a diaphragm kit for the PCV with the cap which I might go ahead and install. It is less than $25 from Rock Auto.
      1998 V70 T5M - SOLD
      2002 V70 - SOLD
      2001 V70 T5M, TME Springs, 216,000 miles - SOLD
      2008 XC70

    8. #6
      Junior Member
      Join Date
      Sep 2018
      Posts
      261
      Let us know how the new diaphram goes onto the PCV Oil Trap. I spent $350 for that repair.

    9. #7
      Junior Member
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      Dec 2015
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      144
      Get the one with the cap in the kit. I tried to carefully remove the cap and I could not do it without destroying it due to heat stressed plastic.

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