Volvo Owners Club Forum - View Single Post - V70 AWD Transmission: - Xc 70 2003 auto transmission fluid change/flush

palwing · Jul 30th, 2020, 17:40

Hi all. Just had my 16 yr old grandson do a Gibbons method oil flush of my 2005 D5 XC70 5 speed auto, with 115,000 miles on the clock. I used the Mannol ATF fluid advertised on Ebay. 10 litres for £32 inc p&p. That’s how easy and cheap it is to do.

I had a 3 litre sump dump carried out by my Volvo specialist back in January and I did a 1 litre Gibbons flush soon after. It did improve things but the change was still lumpy at times between 1st and 2nd when hot. However, it was very intermittent depending on how you used the throttle.

My grandson flushed 9 litres through today (took about an hour) and the oil was very brownish and cloudy. Even after 9 litres had been flushed, the oil coming out was still brownish and cloudy, which was disappointing, but there was at least a reddish tinge to it and it seems more fluid like come the end.

After a very quick test run with hot oil, 1st to 2nd can still be randomly lumpy but nowhere near as severe as originally. The other gear changes are silky smooth as always and almost imperceptible. Maybe another 10 litre flush until we get red clear oil coming out might be worth doing?

The question is, I have read how on later models you have to reset something to tell the car it has new transmission oil. However, I have not heard of this on the older models. Some posters have mentioned that some gearboxes do a self learning process after gearbox oil changes. However, I would be surprised if it applied for my car.

Anyone know?

Jul 30th, 2020, 17:40	#20
palwing Member Last Online: Sep 10th, 2023 19:32 Join Date: May 2007 Location: OneBoat	This Hi all. Just had my 16 yr old grandson do a Gibbons method oil flush of my 2005 D5 XC70 5 speed auto, with 115,000 miles on the clock. I used the Mannol ATF fluid advertised on Ebay. 10 litres for £32 inc p&p. That’s how easy and cheap it is to do. I had a 3 litre sump dump carried out by my Volvo specialist back in January and I did a 1 litre Gibbons flush soon after. It did improve things but the change was still lumpy at times between 1st and 2nd when hot. However, it was very intermittent depending on how you used the throttle. My grandson flushed 9 litres through today (took about an hour) and the oil was very brownish and cloudy. Even after 9 litres had been flushed, the oil coming out was still brownish and cloudy, which was disappointing, but there was at least a reddish tinge to it and it seems more fluid like come the end. After a very quick test run with hot oil, 1st to 2nd can still be randomly lumpy but nowhere near as severe as originally. The other gear changes are silky smooth as always and almost imperceptible. Maybe another 10 litre flush until we get red clear oil coming out might be worth doing? The question is, I have read how on later models you have to reset something to tell the car it has new transmission oil. However, I have not heard of this on the older models. Some posters have mentioned that some gearboxes do a self learning process after gearbox oil changes. However, I would be surprised if it applied for my car. Anyone know?