BMW E46 5W-30 Oil Change Guide – 323i, 325i, 328i & 330i

The BMW E46 3 Series remains one of the most popular generations among BMW enthusiasts. Whether you drive a 323i, 325i, 328i, 330i, 325Ci or 330Ci, regular engine oil maintenance is one of the most important steps in keeping these naturally aspirated BMW inline-six engines properly serviced.

For compatible applications, the Liqui Moly Special Tec LL 5W-30 BMW E46 Oil Change Kit combines 7 liters of Liqui Moly Special Tec LL SAE 5W-30, an OE-quality MANN oil filter and applicable service sealing components in one convenient package.

Why Regular Oil Changes Matter on the BMW E46

BMW E46 models are now well into enthusiast and collector-car territory, which makes consistent maintenance increasingly important.

Engine oil lubricates internal components, helps control friction and wear, carries contaminants toward the oil filter and contributes to temperature management throughout the engine.

As oil accumulates mileage, time and repeated heat cycles, its ability to perform these jobs gradually deteriorates. Replacing both the oil and filter at appropriate intervals provides a fresh lubrication and filtration starting point.

Why Liqui Moly Special Tec LL 5W-30?

Liqui Moly Special Tec LL SAE 5W-30 is a fully synthetic engine oil carrying BMW Longlife-01 approval. Liqui Moly also lists ACEA A3/B4, API SL, MB-Approval 229.5 and VW 502 00/505 00 among its current specifications and approvals.

For compatible E46 applications, this makes it a strong choice when the required BMW specification matches the vehicle.

Liqui Moly highlights characteristics including:

• Excellent engine cleanliness
• High lubrication reliability
• High shear stability
• Rapid lubrication after cold starts
• Strong aging stability
• Catalytic-converter compatibility

For owners preparing for maintenance, the complete BMW E46 5W-30 oil change kit puts the engine oil, filter and applicable service components together.

What's Included in the Kit?

Having these components together makes preparation for an E46 oil service considerably simpler.

BMW E46 Fitment

This service package is intended for compatible E46 applications including:

Always confirm your vehicle's year, model, engine, production date and VIN before ordering.

BMW 325i E46 Oil Change

The E46 325i uses BMW's M54 2.5-liter naturally aspirated inline-six.

Regular oil changes are especially relevant as these cars age. Maintaining fresh engine oil and filtration helps keep the lubrication system in good operating condition and also gives owners an opportunity to inspect an older engine for developing leaks.

For compatible applications, the BMW 325i Liqui Moly 5W-30 Oil Change Kit provides the primary components needed for the service.

BMW 330i & 330Ci Oil Change

The E46 330i and 330Ci use the 3.0-liter M54 inline-six.

These models remain particularly popular with BMW enthusiasts because of their combination of naturally aspirated power, rear-wheel-drive chassis dynamics and relatively straightforward mechanical design.

The same basic oil-service principle applies: use the appropriate engine oil, replace the filter, install fresh sealing components where required and verify the oil level after completing the service.

The BMW 330i and 330Ci 5W-30 Oil Change Kit combines those routine maintenance components into a single package.

BMW 323i & 328i Oil Change

Earlier six-cylinder E46 models such as the 323i and 328i use BMW's M52TU engine family rather than the later M54.

This distinction matters when purchasing replacement and maintenance parts.

The fact that two vehicles share the E46 chassis does not automatically mean every engine component is interchangeable. Always identify the exact engine before ordering.

M52TU vs M54 – Know Your E46 Engine

One of the easiest mistakes when shopping for E46 maintenance parts is assuming that "E46" identifies the engine.

It doesn't.

The E46 platform was produced with numerous engine configurations.

For the popular U.S.-market six-cylinder models:

323i / 323Ci → M52TU 2.5L

328i / 328Ci → M52TU 2.8L

325i / 325Ci / 325xi → M54 2.5L

330i / 330Ci / 330xi → M54 3.0L

Knowing whether your BMW has an M52TU or M54 helps prevent ordering incorrect engine-specific components.

What Does BMW Longlife-01 Mean?

An important distinction when selecting oil is the difference between viscosity and manufacturer specification.

5W-30 describes the SAE viscosity grade.

BMW Longlife-01 is a BMW engine-oil specification.

Therefore, two bottles can both say 5W-30 while meeting different manufacturer requirements.

Liqui Moly lists BMW Longlife-01 as an official approval for Special Tec LL 5W-30.

This is why selecting oil based only on the large viscosity numbers on the bottle isn't always enough.

Why Replace the Oil Filter?

The engine oil filter captures contaminants circulating through the lubrication system.

As the filter accumulates service time, contaminants collect within its filtration media. Installing fresh engine oil while retaining a used filter means the new lubricant immediately begins circulating through an already-used filtration element.

Replacing the oil and filter together is therefore standard practice during routine engine maintenance.

MANN Oil Filter for BMW E46

The service package uses an OE-quality MANN cartridge oil filter for compatible applications.

The relevant references are:

BMW OE Filter Reference: 11427512300

MANN Filter Reference: HU 925/4 X

These reference numbers are useful when verifying component compatibility but should not replace proper vehicle fitment checking.

The SayParts BMW E46 Oil Change Kit combines the filter with Liqui Moly Special Tec LL 5W-30 and applicable service seals.

How Much Oil Comes With the Kit?

The kit contains:

5L + 1L + 1L = 7 liters

of Liqui Moly Special Tec LL SAE 5W-30.

However, this does not mean all 7 liters should automatically be poured into every compatible engine.

Kit quantity and exact engine refill capacity are not necessarily identical.

Follow the appropriate service procedure for your exact BMW engine and verify the final oil level after servicing.

Basic BMW E46 Oil Change Procedure

A typical E46 oil service begins by safely preparing the vehicle and draining the old engine oil.

The cartridge oil filter should be removed from its housing and replaced. The old filter-housing O-ring should also be removed and replaced with the new seal supplied for the service.

Apply a small amount of clean engine oil to the new O-ring before installation and make sure it sits in the correct groove.

After correctly reinstalling the drain components and filter assembly, add the appropriate amount of fresh engine oil.

Run the engine, inspect the filter housing and drain area for leaks, allow the oil level to stabilize and verify the final level according to the appropriate procedure.

Always use the correct BMW service information and torque specifications for your particular vehicle.

What Should You Inspect During an E46 Oil Change?

Because E46s are older vehicles, an oil change is also a useful opportunity to inspect the engine for other maintenance issues.

Pay attention to:

• Oil-filter housing area
• Valve-cover area
• Oil pan and drain area
• Cooling-system hoses
• Coolant leakage
• Belts and pulleys
• Crankcase ventilation hoses
• Fluid underneath the engine
• Damaged electrical connectors
• Unusual contamination in the old oil filter

Finding a developing problem during routine maintenance can prevent it from becoming a larger repair later.

E46 Oil Leaks: What to Look For

Oil leakage is relatively common on aging BMW engines.

However, oil visible underneath the engine doesn't necessarily identify the source. Oil can travel downward and rearward across multiple components before eventually dripping.

Cleaning the affected area and tracing fresh leakage is generally more useful than replacing whichever gasket happens to be closest to the lowest visible oil spot.

BMW 325i vs 330i Oil Service

Both the E46 325i and 330i use versions of BMW's M54 engine family, but their displacement differs.

The 325i uses the M54B25 2.5L, while the 330i uses the M54B30 3.0L.

This is another reason to confirm the exact model and engine before servicing the vehicle.

For compatible applications, both can be covered by the Liqui Moly BMW E46 Oil Change Kit available from SayParts.

E46 325xi & 330xi Oil Changes

BMW's 325xi and 330xi add all-wheel drive to the E46 platform.

Although their M54 engines share many maintenance components with rear-wheel-drive versions, the vehicles contain additional drivetrain hardware.

That means other maintenance jobs may differ substantially between i and xi models even when the basic engine-oil service components are shared.

Never assume that compatibility for an engine-oil component means every chassis or drivetrain component is interchangeable.

Common BMW E46 Oil Change Mistakes

Some of the most avoidable mistakes include:

• Ordering parts based only on the E46 chassis
• Confusing M52TU and M54 applications
• Choosing oil based only on viscosity
• Reusing an old oil filter
• Reusing aged filter-housing seals
• Installing the filter O-ring in the wrong position
• Overfilling the engine
• Guessing torque specifications
• Failing to inspect for leaks after service
• Assuming every E46 has the same engine

Correct vehicle identification before ordering eliminates many of these problems.

BMW E46 Oil Change FAQ

What oil comes with this kit?
Liqui Moly Special Tec LL SAE 5W-30.

How much oil is supplied?
The package contains 7 liters.

Is Liqui Moly Special Tec LL 5W-30 BMW approved?
Liqui Moly lists BMW Longlife-01 among its official approvals for Special Tec LL 5W-30.

Does the kit include an oil filter?
Yes. An OE-quality MANN cartridge filter and applicable service seals are included.

What is the BMW oil-filter reference?
11427512300.

What is the MANN filter reference?
HU 925/4 X.

Does it fit a BMW E46 325i?
The kit is intended for compatible M54-powered E46 325i applications.

Does it fit a BMW E46 330i?
Compatible M54-powered E46 330i applications are included.

Does it fit a 325Ci or 330Ci?
Compatible E46 coupe applications are included.

Does it fit every BMW E46?
No. The E46 platform was produced with multiple engines. Always verify year, model, engine, production date and VIN before ordering.

Complete Your BMW E46 Oil Service

Whether you're maintaining a 323i, 325i, 328i, 330i, 325Ci, 330Ci or compatible xDrive-era xi variant, regular oil and filter maintenance remains one of the fundamentals of keeping an E46 properly serviced.

This package combines Liqui Moly Special Tec LL 5W-30, an OE-quality MANN oil filter and applicable service seals into one convenient maintenance kit.

For your next service, shop the Liqui Moly Special Tec LL 5W-30 BMW E46 Oil Change Kit at SayParts.

You can also browse BMW maintenance parts and oil change kits at SayParts.