Mixing gearbox oil.

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

User avatar
Posts: 245
Joined: 02 Sep 2016, 19:53
Location: Bolsover, home of the Beast, and Corrèze.
My Cars: 2009 Citroen C5 2.0HDi Exclusive Tourer
(Previously, in order....Dyane, 2CV6 x 3, Visa 1.7D, GSA estate, GS Pallas, CX TurboII, Picasso...all fondly remembered!).
x 13

Mixing gearbox oil.

Post by milleplod » 16 Nov 2017, 13:48

I've just had 3 ltrs of fresh oil put in my '09 C5's gearbox, courtesy of Malcolm at Savoy Garage - its really made a difference to the low-speed changes, they're much smoother now. I'd already bought the oil from Smith and Allen, the JWS3309 stuff, and there's now 2 ltrs left in the container. I've just called at a mate's for a brew and was telling him about the fluid change - he's got 5 ltrs of ECP's Triple QX Multi Vehicle ATF-U that he's offered me for £15. Looking at the blurb on it, it has JWS3309 in its spec list. Would there be any harm in using this for the next 3 ltr change do you think? Or should I stick to the same brand?

Mind you, thinking about it, the S&A stuff seems to have mixed nicely with the black gunge that's been in the box from new, so perhaps I'm overthinking things! :lol:

L'enfer, c'est les autres.

User avatar
donor 2017
Posts: 366
Joined: 23 May 2015, 23:35
Location: North Wales
My Cars: Citroens
1 x GS, 1 x GSX (Banger raced), 1 x GSA,
2 x CX Famililles, 1 x CX GTI,
BX, XM, Xantia, C5 Mk1,
C4 (Coupe), C4 (B7),
C5 (X7)

R4 Van
Clio Campas
x 15

Re: Mixing gearbox oil.

Post by Sloppysod » 19 Nov 2017, 12:07

Providing it meets the same specification then mixing should not be a problem. Personally, I would Google both oils and compare the data sheets, and not rely on the information on the bottle, just to make sure. The JWS3309 is a Toyota spec and is available online.

User avatar
donor 2018
Posts: 632
Joined: 01 Jul 2017, 21:48
Location: East Yorkshire / N. Wales
My Cars: Citroen C5 RHR AM6
x 42

Re: Mixing gearbox oil.

Post by EDC5 » 20 Nov 2017, 12:07

Is there any point risking it when the proper stuff is £13 a litre:

https://www.ebay.co.uk/itm/Mobil-ATF-33 ... SwZElZmRno

User avatar
van ordinaire
donor 2017
Posts: 1461
Joined: 23 Jun 2015, 14:45
Location: Live & work in London but weekend in Devon (or do I now live in Torbay & work in London?)
My Cars: Citroens:-
'81 2CV Club (quietly sleeping in a parallel universe)
'05 (yes, really) C15
'96 Jeep Cherokee Limited - the "donor"
'99 Jeep Cherokee Orvis - the green one
'97 Jeep Cherokee Limited - the red one
'99 Cadillac Seville STS
'96 Cadillac Eldorado ETC
& numerous what might be described as abandoned projects!
x 126

Re: Mixing gearbox oil.

Post by van ordinaire » 09 Jan 2018, 00:27

I found that S & A was one of the very few suppliers of the correct spec. oil, when I was gently put right about the correct weight oil to use - AND a little under £20 for 5 litres. Somewhat curiously, few, if any, of their other products are so keenly priced.
'81 2CV Club :cry:
'05 C15 :!:
'96 Jeep Cherokee - the "donor" :(
'99 Cherokee - the green one [-o<
'97 Cherokee - the red one :?
'96 Cadillac Eldorado
'99 Cadillac STS :|
& the numerous "abandoned projects" #-o

Posts: 1371
Joined: 30 Oct 2012, 23:37
Location: Chelmsford, Essex
My Cars: Lots of CXs...
A couple of Xantia...
Lots of Prelude's...
And a Sunny.
x 44

Re: Mixing gearbox oil.

Post by wurlycorner » 12 Jan 2018, 12:29

EDC5 wrote:
20 Nov 2017, 12:07
Is there any point risking it when the proper stuff is £13 a litre:

https://www.ebay.co.uk/itm/Mobil-ATF-33 ... SwZElZmRno

£11.95 from opie (plus £3.50 delivery but then minus discount of 10% if you use code LUDEGEN )
https://www.opieoils.co.uk/p-69402-mobi ... fluid.aspx

Just noticed they also do 5Litre packs of LHM for less than available on ebay, too (hadn't noticed them on their store last time I checked);
https://www.opieoils.co.uk/p-131828-trw ... fluid.aspx

2x '85 CX GTi Turbo s1 (metallic blue and green)
2x '85 CX GTi Turbo s2 t1 (metallic silver and grey)
'88 CX GTi Turbo s2 T2 (metallic light blue)
CX DTR T2 Safari (silver)
2x '96 Xantia Activa (Black and Metallic Green)
'01 C5 2.0 HDi LX Estate (Blue)