Product Overview & Specifications
Liqui Moly Longtime High Tech 5W-30 is a technologically advanced, high-performance engine oil specifically engineered for modern gasoline and diesel engines, particularly those found in European automotive platforms. This formulation utilizes a sophisticated blend of hydrocracked synthetic (HC-synthetic) base oils, which are premium Group III base stocks, combined with an intricately balanced additive package. The HC-synthetic base oils provide superior thermal stability, oxidation resistance, and shear stability compared to conventional mineral oils, while offering excellent low-temperature flow characteristics. The “Longtime High Tech” designation underscores its capability to meet extended drain interval requirements set by numerous vehicle manufacturers. Key marketing claims revolve around optimized fuel economy, exceptional wear protection across a broad temperature range, minimized friction, and effective engine cleanliness through superior sludge and deposit control. It is specifically designed as a mid-SAPS (Sulfated Ash, Phosphorus, Sulfur) lubricant, making it inherently suitable for vehicles equipped with sensitive exhaust aftertreatment systems such as diesel particulate filters (DPF) and gasoline particulate filters (GPF). Its real-world target audience comprises discerning owners of late-model European vehicles, including those from BMW, Mercedes-Benz, Volkswagen Group, and Ford, who demand a robust lubricant that adheres to stringent OEM specifications for performance, longevity, and emission control.
Technical Characteristics Table
Here are the key universal technical metrics for this motor oil:
| Parameter | Value / Specification |
|---|---|
| SAE Viscosity Grade | 5W-30 |
| Base Oil Type | HC-Synthetic (Hydrocracked Synthetic) |
| OEM Approvals & Licenses |
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| ACEA / API Classifications |
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Recommended Applications & Car Compatibility
Liqui Moly Longtime High Tech 5W-30 is exceptionally well-suited for a broad spectrum of modern automotive engines, particularly those with manufacturer specifications requiring a mid-SAPS 5W-30 lubricant. Its primary compatibility extends to late-model European vehicles from brands such as BMW, Mercedes-Benz, Audi, Volkswagen, Seat, Skoda, Porsche (models requiring C30), and Ford, especially where extended drain intervals are specified. The oil’s robust formulation makes it ideal for engines featuring advanced technologies:
- Turbocharged Engines: The oil exhibits outstanding thermal and oxidative stability, which is critical for lubricating turbocharger bearings operating at extreme temperatures, preventing carbon deposits and ensuring longevity.
- Gasoline Direct Injection (GDI) Engines: While primarily ACEA C3, the modern additive package provides protection against common GDI-related issues, including effective control of deposits on intake valves and robust film strength to mitigate wear in high-pressure fuel pump systems. Its overall cleanliness properties help manage potential Low-Speed Pre-Ignition (LSPI) risks, though specific API SP formulations are purpose-built for this.
- Diesel Particulate Filters (DPF) & Gasoline Particulate Filters (GPF): Its mid-SAPS chemistry is paramount for the longevity and efficient operation of these critical exhaust aftertreatment systems. The controlled levels of sulfated ash, phosphorus, and sulfur prevent poisoning and clogging of catalytic converters and particulate filters, ensuring compliance with emission standards and avoiding costly repairs.
- Flexible Service Intervals: Designed to meet the stringent requirements of OEM flexible service interval programs, enabling extended oil change periods under appropriate driving conditions.
This oil is a preferred choice for vehicles requiring the mentioned OEM approvals, ensuring optimal performance, emission control, and engine protection as originally intended by the manufacturer.
Operating Conditions & Drain Intervals
- Standard Drain Interval: This lubricant is engineered for extended drain intervals, typically up to 30,000 kilometers (approx. 18,000 miles) or 1 year, whichever comes first. This applies to vehicles operating under normal highway driving conditions with consistent speeds, regular maintenance, and an average load. Always consult the specific vehicle manufacturer’s recommendations and the onboard service indicator for precise intervals, as these can vary significantly by model and engine.
- Severe Service Interval: For vehicles subjected to severe operating conditions, the drain interval should be significantly reduced. This includes heavy city traffic, frequent short trips where the engine does not reach optimal operating temperature, excessive idling, towing heavy loads, off-road driving, or operation in extremely dusty, hot, or cold environments. In such cases, it is advisable to reduce the drain interval to approximately 7,500 to 15,000 kilometers (approx. 4,500 to 9,000 miles) or every 6 months, again, adhering to OEM recommendations for severe service where available.
- Temperature Performance:
- Cold Winter Starts: The 5W viscosity grade ensures exceptional low-temperature pumpability and rapid oil circulation even in frigid conditions. With a pour point typically below -35°C (-31°F), it minimizes initial start-up wear by quickly lubricating critical engine components, providing immediate oil film protection where it’s most needed.
- High-Heat Summer Loads: The robust synthetic base oils and advanced additive package maintain film strength and thermal stability under sustained high operating temperatures, such as during heavy summer driving, spirited driving, or prolonged highway speeds. This prevents viscosity breakdown, reduces oxidation, and safeguards against wear in highly stressed areas like cylinder walls, camshafts, and turbocharger bearings.
Usage Restrictions & Limitations
While Liqui Moly Longtime High Tech 5W-30 is a versatile and high-performance lubricant, it is critical to observe specific usage restrictions to ensure optimal engine health and avoid potential issues:
- OEM Specification Mismatch: This oil must not be used in engines that explicitly require different OEM approvals or viscosity grades (e.g., 0W-20, 5W-40, 10W-60, or engines specifying API GF-6A/B for very low viscosity). Adhering strictly to the manufacturer’s recommended specifications is paramount for engine longevity and warranty compliance.
- High-SAPS Requirements: Engines designed to operate with conventional high-SAPS (ACEA A3/B4 or older API classifications without ‘SN Plus’/’SP’ requirements) might not benefit from this mid-SAPS formulation, and in some rare cases, might experience accelerated wear or reduced protection if the additive package is not optimized for their specific metallurgy or operating conditions. Older engines without DPFs that require higher ash content for wear protection should avoid C3 oils.
- Older Engine Seal Compatibility: While modern HC-synthetics are generally compatible with older seal materials, extreme caution should be exercised when introducing a fully synthetic oil into very old engines (pre-1990s) that have exclusively run on conventional mineral oils. In rare instances, the superior cleaning properties and different solvency characteristics of synthetics can reveal pre-existing seal degradation or cause leaks in seals that have become hardened and brittle over decades.
- Engines Requiring Specific LSPI Protection (API SP): While ACEA C3 oils often offer good general protection, engines with severe Low-Speed Pre-Ignition (LSPI) susceptibility, particularly those requiring the specific formulation and testing standards of API SP or ILSAC GF-6, should prioritize oils explicitly carrying those certifications if recommended by the OEM.
Always cross-reference the Liqui Moly product data sheet with your vehicle’s owner’s manual or service manual to confirm compatibility and avoid any misapplication.
