Modern turbocharged engines require a special approach when it comes to choosing motor oil. Operating under increased pressure and temperature puts greater demands on lubricants. The oil must not only provide effective wear protection, but also maintain stable characteristics under extreme loads. This article discusses the key features of turbocharged engines and offers recommendations for choosing oils from the Pexol range.
Why Turbo Engines Need Special Oils
Turbocharging increases both pressure and temperature inside the engine. The turbine spins at extremely high speeds (up to 200,000 rpm) and is subject to intense thermal and mechanical stresses. Oil in such an engine must:
- Quickly lubricate components under extreme temperatures.
- Cool turbine parts.
- Maintain viscosity and structure under high loads.
- Prevent the formation of deposits and carbon buildup.
Oil Selection Recommendations
- SAE Viscosity
For turbocharged engines, it is recommended to use oil with the viscosity specified by the manufacturer—usually 5W-30 or 5W-40. More fluid oils (such as 0W-30) are suitable for new engines and cold climates, but for older turbo engines, slightly thicker oils are preferred as they are more resistant to fuel dilution and high temperatures.
- ACEA/API Classification
Oils of ACEA A3/B4, API SN/SM or higher are suitable for turbocharged gasoline engines. PEXOL P3 5W-40 is a fully synthetic oil that retains its performance characteristics and provides effective engine protection throughout the manufacturer’s recommended replacement interval, even under harsh conditions.
For turbocharged diesels, look for oils with ACEA C3 or C4, API CF/CI-4 and modern equivalents.
Important: Modern turbo engines often require low-SAPS oils to ensure compatibility with aftertreatment systems.
PEXOL T7 10W-40 is a semi-synthetic, low-SAPS motor oil for high-load diesel engines meeting EURO 4/5/6 standards. It ensures effective operation of EGR systems, SCR selective catalytic reduction, and DPF particulate filters. It has enhanced anti-wear properties.
Fully synthetic or semi-synthetic oils are best for turbo engines. They oxidize more slowly, produce fewer deposits, perform better under high pressure and temperature, and offer superior protection for engine parts and the turbo itself.
- Additives
Turbocharged engines require oils containing antioxidant, detergent, and anti-foam additives. This minimizes deposits on the walls of the turbo and valves and prevents oil coking.
- Oil Change Interval
Oil degrades faster in turbo engines. Experienced drivers and manufacturers recommend changing the oil 1.5-2 times more often than for naturally aspirated engines—typically every 7,000-10,000 km (or even more frequently, depending on operating conditions). All these features help prevent deposit formation and protect the turbocharger.
Common Mistakes When Choosing Oil
- Using cheap mineral oils instead of synthetic or semi-synthetic options.
- Disregarding manufacturer specifications.
- Ignoring low-SAPS requirements (important for turbodiesels).
- Rarely changing the oil.
- Using oils with unsuitable viscosity.
Turbocharged engines are modern high-tech units that require special attention to maintenance quality. Selecting the right oil is the key to engine longevity, trouble-free turbo operation, and savings on repairs. PEXOL offers solutions that meet the technological challenges of today’s engines. It is crucial to follow automaker recommendations, choose only quality oils with the required approvals, and avoid delaying oil changes.
