Gear box oil

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Ardtullaich
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Gear box oil

Post by Ardtullaich »

Can any one help me
I have a 2008 c5 mk3 2ltr hdi 138bhp saloon.
I have a manual six speed box need to what oil for gear box and where to fill. Lost about a litre yesterday while changing a wheel bearing.
Cheers
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GiveMeABreak
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Re: Gear box oil

Post by GiveMeABreak »

Ok, so a couple of things:-

As you know these are 'sealed for life' so there is no fill plug as such. There were 2 types of MLC gearbox, one with cooling fins and one without - each having different capacities.
  • Gearbox casing with fins 1.9 Litres
  • Gearbox casing without fins 2.6 Litres
Type of Oil: ESSO 75W80 EZL 848 or TOTAL 75W80 H6965

Because there is no oil level detection, if there has been a leak or in the case of a repair then the gearbox must be drained and then refilled - as there is a risk of over or under filling the gearbox and this can damage it or blow the seals if over-filled.

So you need to check underneath the box to see if you can detect cooling fins as in the diagram 2 below. Make sure you have the new seal (part No. and price in the table) and then drain the oil and refill with the specified quantity above.
X7 Gearbox Oil A.PNG
X7 Gearbox Oil B.PNG
X7 Gearbox Oil C.PNG
[1] This is the Tool for Filling[2] Remove the drain plug (1) Fitted with its seal. (you must replace the seal once removed - Citroen Part: 016430 £2.08 inc. VAT)
Note: Gearbox shown with Cooling Fins
[3] Refill the gearbox via the air vent hole ( as "a"); Using a tool similar to Diagram 1
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Marc
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Re: Gear box oil

Post by white exec »

The Total oil listed above is Total Transmission 8 gear oil (75W-80 GL-4). It meets PSA's B71 2330 spec. For easy gear changing, the GL-4 formulation is important.
Chris
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Re: Gear box oil

Post by Ardtullaich »

Cheers white exec that was a doddle.😊
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