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There seems to be much discussion in the forums about changing the ATF on an XC70. My 2013 XC70 3.2 is just about to reach 50K miles. I have always tried to change the ATF in all my Volvo's about every 50K miles. So today I changed the ATF. The standard line from Volvo is the ATF is good for a lifetime. I consider that to be poor advice. There is much going on inside an automatic transmission with clutches, bands, drums, valves, gears, bearings, etc. and all of them are dependent on the quality of the ATF. As in any mechanical device there is friction that causes heat which over time tends to break down the lubricant of these devises. Also, due to the nature of the clutches and bands some of the their surface material finds its way into the lubricant. Thus it seems prudent to replace the lubricating media - the ATF. The drained ATF was dark, but had no brunt smell.
 
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