In this article we will try to help you fix a issue that can be frustrating, and if not taken on time become a financial drain. In reality, distinguishing a leak on your car is rarely reassuring, and it is even less reassuring when it’s a gearbox leak on your Renault Laguna 3 . In this article, we’re going to help you confirm that it’s in truth a gearbox leak, then, how to remedy a gearbox or transmission leak, then, give you some prevention suggestions, and, at last, give you an idea of the price of the gearbox of a Renault Laguna 3.

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Gearbox leak on Renault Laguna 3, source and symptom

If you have noticed an oil stain on the ground, you will need to ensure that this leak is in truth caused by the gearbox of your Renault Laguna 3. To achieve this, you will need to go under your car and follow the oil leak. If it is transmission oil, it must be caused by your gearbox sump or an adjacent room. Once confirmed, here are the possible sources of this transmission leak:

  • A gearbox cap: If it’s wrongly screwed on…
  • Defective torque converter: Just equipped on automatic gearboxes.
  • From the transmission oil sump: In the event that it is cracked or broken
  • One of your seals broken

How to repair a gearbox leak on Renault Laguna 3?

After discovering the different sources of a gearbox or transmission oil leak on your Renault Laguna 3, we will try to explain to you what are your possibilities to remedy this oil leak. Remember that no matter the reason, after having distinguished a leak, you must go to a mechanic to determine the exact source of the leak, in any other case your gearbox may be irreparably broken. Nevertheless, here is how the service of the mechanic and the solutions that will be offered to you:

  • Very often to determine the leak, the auto mechanic will have to dismantle your gearbox, which will require a high labour cost.
  • If you’re lucky and it’s just a gasket, your auto mechanic will replace it and reassemble the gearbox of your Renault Laguna 3, in any other case you’ll have to change the complete gearbox
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  • At last, for the do-it-yourselfers, it is possible to use a sealing kit which is just powerful in the case of small leaks, this kit is worth around 40 euros

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Prevention: How to avoid gearbox leaks on your Renault Laguna 3?

There aren’t many solutions to avoid gearbox leaks on your Renault Laguna 3 , however here are the three most effective:

  • Regular oil changes on your gearbox deck.
  • Drain your gearbox and put new oil in it. If you want to know everything about this action, please examine our article on this subject.
  • Use a particular additive for routine service of gearbox seals, these additives will restore flexibility and allow to plug moderate leaks, you will locate some for a few dozen euros at Oscaro.

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Price of a Renault Laguna 3 gearbox

At last, we would like to give you an idea of how much it costs to change the gearbox of a Renault Laguna 3. As you have realized, gearbox problems often lead to a complete change of this part. It is difficult to give you a precise price because based on the mechanic the labour can vary a lot and based on your engine the part will also have a different price, however, we estimate that the repair, labour included will cost you between 800 and 2000 euros , knowing that the part alone costs between 400 and 1000 euros.

If you want more guides on the Renault Laguna 3, go to our Renault Laguna 3 category.