DPF Clogging or Oil Breaking Down Too Fast? LIQUI MOLY 5W30 Low-SAPS Synthetic Motor Oil 2039 — Long-Life Protection for Modern Diesel Engines

Using the wrong motor oil in a diesel engine with a particulate filter (DPF) is one of the fastest ways to clog the filter and trigger expensive regeneration cycles or outright DPF failure. LIQUI MOLY's Longtime High Tech 5W30 is a highly advanced low-SAPS (Sulphated Ash, Phosphorus, and Sulphur) synthetic motor oil engineered specifically for modern diesel engines equipped with DPFs, catalytic converters, and turbochargers. When a high-ash oil is used in a DPF-equipped engine, ash accumulates in the filter faster than it can regenerate, leading to blocked DPFs, increased back-pressure, reduced power, and costly repairs. ⚡ The go-to low-SAPS 5W30 for extended drain intervals in European and modern diesel applications. Part 2039 is the genuine LIQUI MOLY formulation that keeps your DPF clean, your engine protected, and your service intervals extended — all from a single 5L canister.

❓ Is This the Right Oil for Your Vehicle?

This is the correct choice if ALL of the following apply:

• ✔ Your vehicle specifies a 5W-30 low-SAPS or mid-SAPS motor oil
• ✔ Your engine is a modern diesel with a diesel particulate filter (DPF)
• ✔ Your manufacturer recommends extended oil change intervals (e.g. 15,000–30,000 km)
• ✔ Your vehicle is compatible with ACEA C3, API SN/CF, or equivalent low-SAPS specifications

Not sure? Send us your vehicle make, model, and year — we'll confirm compatibility before you order.

🔧 Signs You Need a Low-SAPS 5W30 Oil Change

• DPF warning light is on or regeneration cycles are becoming more frequent
• Engine is running rough or producing more smoke than usual
• Oil life indicator or service light is triggered
• Increased fuel consumption or reduced power output
• Oil is dark, degraded, or past its recommended change interval

✔ If these symptoms match, switching to a proper low-SAPS 5W30 like LIQUI MOLY 2039 is the most effective preventive step to protect your DPF and engine.

✔ In most cases, a fresh fill with the correct low-SAPS synthetic restores normal DPF regeneration cycles and engine efficiency immediately.

📦 Product Details

• Part Number: 2039
• GTIN: 4100420020391
• Type: Low-SAPS Fully Synthetic Motor Oil — Longtime High Tech Formula
• Viscosity: SAE 5W-30
• Volume: 5 Litres (Plastic Canister)
• Brand: LIQUI MOLY
• Country of Origin: Germany
• Compatible Engine Types: Modern diesel engines with diesel particulate filters (DPF); also compatible with catalytic converters and turbochargers
• Specifications: ACEA C3, API SN/CF — low-SAPS formulation approved for extended drain intervals
• Miscibility: Miscible with all commercially available motor oils

⚙️ Application

Skill Level: EASY — 30 to 45 minutes. Disconnect the vehicle and ensure the engine is warm but not hot before draining. Drain the old oil completely, replace the drain plug and oil filter, then fill with the correct quantity of LIQUI MOLY 5W30 per your vehicle's owner manual. Start the engine, check for leaks, and reset the oil service indicator before returning to service.

✓ Vehicle Compatibility

Confirmed suitable for vehicles specifying 5W-30 low-SAPS synthetic including many BMW, Mercedes-Benz, Volkswagen, Audi, Opel/Vauxhall, Ford, and other European makes with DPF-equipped diesel engines requiring ACEA C3 or equivalent specification. Also suitable for select petrol applications specifying low-SAPS 5W-30. Contact us to verify compatibility with your specific vehicle before ordering.

💡 Pro Tip

📄 Technical Data Sheet

Download LIQUI MOLY 5W30 Longtime High Tech Technical Data Sheet (PDF)