If you can drain the fluid through a plug in the pan and you empty 3.5 quarts, you'll wind up putting in fresh 3.5 quarts into the empty pan. Now, if you flush through the radiator transmission hose, all 3.5 quarts will be pumped into the system while 3.5 quarts come out of the hose. There will be ...

Buy a bottle of Lubegard HFM. Add 3 oz. Drive for a couple of days. If it improves your situation, fresh ATF will help.

I posted info here...

viewtopic.php?t=88299&start=10

. Those bulbs are so small and wattage so low that LED' will be fine. Volvo V70 Instrument Cluster Replacement https://www.pelicanparts.com/techarticles/Volvo-V70/83-ELEC-Instrument_Cluster_Replacement/83-ELEC-Instrument_Cluster_Replacement.htm Instrument Cluster Bulb Kit - P2 S60 V70 XC70 S80 FOUR ...

My recent experience with 2001 V70 T5 with 5 speed auto:
Drain amount measured as 112 to 118 OZ - more drained when oil hot. Say 3.5 QT if you don't spill.
My calculation shows 4 drain/refill gives fresh oil at about 90%. I did more cycles.
volvolugnut

Strong opinions on both sides for drain and fill vs flush. General consensus is drain/fill if fluid is dark brown, flush if a tinge of red, and if burnt smell—leave alone. Logic being if dark/burnt new too slippery fluid could cause clutches in trans to slip. That said I’ve done a cooler return flus...

This video explains the issues you are dealing with very well: https://www.youtube.com/watch?v=o690DovjDAc My advice: DO NOT use "Multi-Vehicle ATF" - Instead use the fluid that is SPECIFIC to the transmission. All my Volvos have an AISIN Transmission - and I use AISIN ATF specific to thei...

My suggestion is to drain from the bottom drain hole as much as will pour out (about 3.6 quarts). Refill with Mobil 3309 in the same measured amount. Drive normally for about 100 miles. The drain, fill and drive plan should reduce any shock of fluid change on the transmission. Do not use MaxLife - i...

If your friend’s 2013 is like our 2018 then he is correct - there is no dipstick. The fluid level is set by opening a stand tube that is in the center of the drain plug while it is idling in park (warm engine). In order to expose the fill port I had to move the air filter box out of the way. Don’t s...

WD-40, Kroils, PB Blaster, whatever you have.
volvolugnut