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Re: Maintenance of gearbox ....

Tue Sep 27, 2016 8:40 am

Mine was changed by the dealer a couple of years ago, but I don't recall any difference in feel.
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Re: Maintenance of gearbox ....

Wed Oct 11, 2017 11:35 am

So is changing the gearbox oil what is referred to as "Drain the reducer" in the Peugeot iOn servicing book? If so, this should be done every 5 years/62.500 miles.

And I've just had a look underneath the iOn. Is this the gearbox drain and fill plugs?

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Re: Maintenance of gearbox ....

Mon Apr 09, 2018 6:01 am

kiev wrote:Any Standard Pressure (i.e. not intended for Extreme Pressure) mineral oil based ATF with class III viscosity would work fine, e.g. Mercon III, or for example

Valvoline maxlife ATF,

Is an ATF the right thing to use in what is essentially a single speed manual transmission and differential ?

The properties of a typical ATF - which is designed to work with wet friction clutches, a torque converter, and act as a high pressure hydraulic fluid for a valve control block are not even remotely similar to the properties of a typical 75w-90 manual gearbox oil, which is much, much thicker, primarily due to there being no pumped oil flow in most manual gearboxes. (So the oil has to be sticky enough to cling to the gears)

Not saying you're wrong, but I find it an odd choice if they did use a standard, thin ATF fluid in this application...
- Simon

EV: 2011 Peugeot Ion
ICE: 1997 Citroen Xantia V6

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Re: Maintenance of gearbox ....

Mon Apr 09, 2018 5:33 pm

75W-90 Hypoid Gear Oil is usually only called for in differentials which have hypoid gears, where the teeth 'wipe' across each other which cause a shearing action of the oil. Modern manual transmissions don't call for it's use anymore

Guess what Dodge called for as lubricant in a 5 speed manual transmission in a one ton diesel dually truck? Yup - ATF. Like you, we thought many other lubricants would be better for that application, so we used 10W-30 motor oil in ours with success

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Re: Maintenance of gearbox ....

Tue Apr 10, 2018 7:49 am

See https://youtu.be/NW6liZWTBgo
Oil for the gearbox is ATF SP III, such as TRIPLE QX ATF Plus Transmission Fluid

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Re: Maintenance of gearbox ....

Wed Apr 11, 2018 6:57 am

JoeS wrote:I'm confused: GRynners, are you saying that there was some slop in the geartrain that is now dampened after the oil change, or is there a different meaning to "a little jerky on take up"? Anyone else do the gearbox oil change and notice any difference?

I just recently changed it on both of our cars. Could not tell a difference in drive-ability or sound. Interesting that the Ion, etc., is calling for a much different frequency for changing it than here in the US with the NA iMiev?

I was able to get the Mitsu brand oil from White Bear Mitsubishi online parts store (on amazon) for $12.88 per quart with free shipping :)

2014 cool silver ES, acquired new 4/2015 (42.7ah at ~26K miles)
2014 Labrador Black Pearl ES, acquired new 3/2016 (41.5ah at ~15k miles)

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