Other S80 Problem: S80D5 Transmission oil

[Rex7]

hi All

I am looking for recomendations to what type of oil I need to change my transmission oil I have the AISIN aw 55-50sn box it has 150,000 on the clock, supposed to have full service history by a indi garage but they are not forcoming in telling what and when, so I hope you can steer me in the right direction
regards Rex

[Georgeandkira]

A fluid meeting the JWS 3309 spec is what you need.
Volvo fluid is quite dear and many avoid it. Many others will use only that.
Finding real Mobil 3309 is a rarity in shops over here in No, America, don't know about the UK.
Toyota T-IV is what most people use going by what they post on Volvo boards. It's readily available.
Valvoline brand MaxLife Dex/Merc LV (the LV is what makes it not old fashioned Dex/Merc) is one I've used gallons of.
In the UK you may have access to PertoCanada synthetic Universal fluid.
There's a company from Germany which sells a 20l keg at a good price in Europe. Many use that.

Are you doing this work yourself? Don't let some careless monkeys lie to you and use whatever. Some fluids can damage your transmission.

[stuart bowes]

ebay link

you might find it cheaper elsewhere

not sure if your box is same as mine, but mine took about 3ltrs so that's 3 drain and fills in one tub (do a few hundred miles in between)

check correct procedure before getting stuck in

[Rex7]

cheers for the info Gerogeand Kira I am going to do it myself

[Rex7]

cheers Stuart