05/10/2017
Demystifying the Citroen Berlingo Oil Filter Housing
Embarking on basic car maintenance can be a rewarding experience, offering a sense of accomplishment and potential cost savings. However, some components can present a steeper learning curve than others. The oil filter housing on a Citroen Berlingo, particularly the cartridge type, is one such area that has caused a few befuddled owners to scratch their heads. This article aims to demystify the process, drawing on the experiences of fellow Berlingo enthusiasts to help you navigate the replacement of the oil filter and its associated components, including the crucial O-ring.
The Cartridge Filter Conundrum
Unlike the more traditional spin-on oil filters, many Berlingo models, especially petrol variants like the 1.6 petrol in the 2005 model mentioned, feature a cartridge filter housed within a plastic casing. This casing is typically accessed via a round plastic cover with a hexagonal nut-like projection on top. Initially, this might seem straightforward, but as many have discovered, it can be a stubborn beast to loosen.
Common Tools and Techniques:
- Socket Size: A 27mm socket is frequently cited as the correct size for this housing. However, it's always wise to double-check, as variations can occur.
- Filter Wrenches: If a socket doesn't fit or you lack the correct size, a strap or band-style oil filter wrench can be used. Be prepared for a slower process, as you'll likely only manage less than a half-turn at a time.
- Protection: When working with a hot engine, the radiator and surrounding components can cause nasty burns. Consider wearing fireproof gloves or sleeves for added protection.
- Catching Spills: Place a rag or absorbent material around the filter housing before attempting to loosen the cap. This will help catch any escaping oil as you remove the cover.
Replacing the Filter Element and O-ring
Once the housing cover is off, the old cartridge filter can usually be removed by gently pulling and twisting it simultaneously. Clean the inside of the housing thoroughly. The new cartridge filter typically comes supplied with a new O-ring. It's imperative to replace this old O-ring with the new one. Lubricating the new O-ring with a smear of clean engine oil before installation can help it seat properly and prevent damage during tightening.
Draining the Old Oil
Draining the engine oil is generally a more standard procedure. The sump plug (or bung) is usually accessible from underneath the vehicle. Some owners mention a need to remove an under-engine plate to gain access, while others find it readily available.
Sump Plug Details:
- Socket Size: A 23mm socket is often mentioned, but again, verification is recommended.
- Square Drive: Some sump plugs feature a square depression in the centre, requiring a specific square key (an 8mm square key is noted). These can be found in specialist tool shops, often as part of a set for various French vehicles.
Ensure you have a suitable container to catch the old oil. Once drained, refit the sump plug, ensuring it's tightened appropriately to prevent leaks.
Refilling with New Oil
After draining the old oil and replacing the filter, the engine needs to be refilled with the correct grade and quantity of new engine oil. For a 1.6 petrol Berlingo, around 3.5 litres is a common capacity, but always consult your vehicle's owner's manual for the precise amount and specification. After refilling, run the engine for a few minutes, then switch it off and allow the oil to settle before checking the level on the dipstick. Top up if necessary.
Troubleshooting Stubborn Filter Housings
Several forum users have reported significant difficulty in loosening the plastic filter housing cap. If the cap is already showing signs of cracking or the tool (socket or wrench) is slipping, it's often advisable to stop and consider replacement of the housing cap before attempting to force it further. Attempting to brute-force a stuck cap can lead to it breaking apart, potentially making the job more complex and costly.
One user's experience highlights this issue: the 27mm socket wouldn't grip the plastic nut, simply twisting and riding up. In such cases, if the cap is already damaged, a common recommendation is to:
- Purchase a new plastic filter cap and a new filter kit, along with replacement O-rings for the housing itself.
- Carefully remove the entire filter housing assembly, being mindful of any connected wires (e.g., to the oil pressure sensor).
- Once removed, the plastic cap can be broken apart to access and remove the old filter element.
- Thoroughly clean the internal components of the housing, ensuring the internal spring mechanism is retained.
- Install the housing back onto the engine block with the new O-rings.
- Fit the new filter element and the new O-ring onto the new plastic cap.
- Lubricate the new O-ring on the cap and then screw it onto the housing, tightening it to the manufacturer's specified torque (often around 25 Nm).
While this approach might seem drastic, it can be a reliable way to overcome a severely stuck or damaged housing, ensuring a proper seal and preventing future issues.
Diesel vs. Petrol Filters
It's worth noting that the location and type of fuel filter can differ between petrol and diesel Berlingo models. For a turbo diesel, the fuel filter is often located underneath the car, typically near the fuel tank on the offside. If you're unsure about the fuel filter's location, consult your vehicle's service manual or reliable online resources specific to your model.
Resetting the Service Indicator
After completing an oil and filter change, many vehicles, including the Berlingo, have a service indicator that needs to be reset. Procedures for this can vary, but are often found elsewhere on vehicle forums or in service manuals. One user successfully reset their indicator using a method described on the forum.
Comparative Table: Oil Filter Housing Tools
| Tool Type | Pros | Cons | When to Use |
|---|---|---|---|
| 27mm Socket | Provides a good grip, quick to use if it fits correctly. | May not fit all models, can slip on worn plastic nuts. | When a snug fit is confirmed. |
| Strap/Band Filter Wrench | Versatile, fits various sizes. | Slower operation, can be awkward in tight spaces, potential for slipping. | When socket doesn't fit or is unavailable, or if the plastic nut is slightly rounded. |
| Specialised Housing Wrench | Designed specifically for the housing, offers excellent grip. | May be less common or more expensive. | Ideal for frequent use or if other methods fail. |
Frequently Asked Questions (FAQs)
Q1: How much oil does my Berlingo need?
A1: The exact amount varies by engine. For a 1.6 petrol, around 3.5 litres is common, but always check your owner's manual. Diesel models may have different requirements.
Q2: My oil filter housing cap is cracked. What should I do?
A2: If the cap is cracked, it's best to replace it. Forcing a cracked cap can lead to further damage. Consider replacing the entire housing assembly if it's severely damaged or stuck.
Q3: Can I just change the oil and leave the filter for another day?
A3: While technically possible, it's not recommended. It's best practice to change both the oil and filter simultaneously to ensure optimal engine lubrication and protection.
Q4: Where is the fuel filter on a diesel Berlingo?
A4: Typically, the fuel filter on diesel models is located underneath the vehicle, near the fuel tank on the offside.
Q5: The plastic nut on my filter housing is starting to split. Should I keep trying?
A5: No, if the plastic is starting to split, stop. You risk breaking the housing. It's better to buy a replacement cap or the entire housing assembly if it's severely stuck or damaged.
Performing your own oil and filter changes can be a satisfying task. With the right tools and a bit of patience, even the more challenging components like the Berlingo's cartridge oil filter housing can be successfully tackled.
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