T6 SQ

High-performance engine oil for excellent cleanliness and wear protection.

Passenger car engine oil circulates in the crankcase of gasoline or diesel car engines. These engines run at higher speeds with lighter loads and frequent starts and stops, so low-temperature flow, deposit control and fuel economy matter more.

This page covers T6 SQ (Fully Synthetic Gasoline Engine Oil) — category Automotive Lubricants / Passenger Vehicle Oils / Engine Oils; SAE 0W-20 / 5W-30 / 5W-40; SQ; pack 4L. The specification table below is taken from our product data as recorded, with no values estimated or filled in.

The table below reproduces the recorded product data; the notes that follow explain the classification and viscosity systems in general terms.

• SAE 0W-20 —— A multigrade viscosity grade: the number before the W rates low-temperature pumpability, where a smaller number means easier cold pumping and starting; the number after the W rates viscosity at 100 °C, where a larger number means a thicker film at high temperature (more sealing and wear margin) but also more flow resistance.A low-viscosity, fuel-economy oriented grade common in modern gasoline engines.
• SAE 5W-30 —— A multigrade viscosity grade: the number before the W rates low-temperature pumpability, where a smaller number means easier cold pumping and starting; the number after the W rates viscosity at 100 °C, where a larger number means a thicker film at high temperature (more sealing and wear margin) but also more flow resistance.A broadly applicable grade balancing cold-start behaviour against high-temperature protection across many gasoline engines.
• SAE 5W-40 —— A multigrade viscosity grade: the number before the W rates low-temperature pumpability, where a smaller number means easier cold pumping and starting; the number after the W rates viscosity at 100 °C, where a larger number means a thicker film at high temperature (more sealing and wear margin) but also more flow resistance.Combines cold-flow ability with higher high-temperature viscosity, often used in turbocharged direct-injection gasoline and some light diesel engines.
• API SQ is among the newest API gasoline categories, tightening deposit control, wear protection and fuel-economy retention beyond the previous generation.
• 4L：A typical single-service volume for a passenger car.
• Grades and viscosities are stated on the product label and pack; the values listed here are exactly as recorded in our product data, and further technical documentation can be requested from our sales team.

This range contains 3 recorded variants (viscosity grade × packaging), listed below. The images in the gallery correspond to these variants and can be switched to inspect each pack.

• Forms a film on moving surfaces so metal-to-metal contact becomes fluid friction, reducing wear.
• Carries friction heat away and helps cool pistons, bearings and other hot spots.
• Disperses soot, sludge and varnish precursors produced by combustion to keep the engine clean.
• Fills the tiny gap between rings and cylinder walls, helping maintain compression and crankcase sealing.
• Neutralises acidic by-products of combustion to limit rust and corrosion.

• Everyday commuting and long-distance driving in passenger cars.
• Turbocharged, direct-injection gasoline engines.
• Engines in hybrid vehicles (using the low-viscosity grade the manual approves).
• Frequent stop-start city duty cycles, which demand better cold flow and deposit control.

Compared with heavy-duty commercial diesel engine oils, passenger car oils place more emphasis on cold starting, fuel economy and protection of timing drives and turbochargers. Compared with transmission fluids, engine oil continuously handles combustion contamination, so its detergent-dispersant and alkalinity systems are entirely different — the two are not interchangeable.

• Follow the viscosity and performance grade specified in the vehicle or equipment manual; when several options are listed, choose according to ambient temperature and actual duty cycle.
• Manual gearboxes must use the specified fluid: gearboxes with brass or bronze synchronisers normally call for GL-4 or a dedicated manual transmission fluid rather than GL-5.
• Avoid long-term mixing of different brands or performance levels; prefer the same specification when topping up or changing fluid.
• Under sustained heavy load, frequent stop-start, hot or dusty conditions, shorten the drain interval and check fluid condition regularly.
• Replace filters where applicable during a fluid change and check the level and any leaks as specified.

• Product name and code: distinguishes different series built to the same specification (the recorded code is listed in the table above).
• Viscosity grade (SAE), e.g. 5W-30: rates low-temperature flow and high-temperature viscosity.
• Performance grade, e.g. API SP or ACEA A3/B4: the standard system and level the fluid meets.
• Net content and pack form, e.g. 4L or 18L: match it against the fill volume you need.
• Batch number and production date: for traceability and shelf-life checks.
• Manufacturer information and contact details: the reference point for any follow-up questions.

• Drain while the fluid is still warm for a more complete change, and have both a drain pan and a used-oil container ready.
• Replace the filter where applicable as the manual requires, and check that the sealing ring is intact.
• Use clean funnels and tools so that moisture, dust and debris do not enter the system.
• Fill to the volume the manual specifies and confirm the level on the dipstick or sight glass; transmission fluids usually need to be checked at a specified fluid temperature and by a set procedure.
• After the change, check the drain plug and mating surfaces for leaks, then re-check the level after a short run.
• Record the mileage or operating hours and the date so the next service can be scheduled.

• "Thicker is safer": only true within the range the manual allows — a viscosity that is too high raises flow resistance and can starve the engine during cold starts.
• "Dark oil means dead oil": diesel engine oil normally darkens as it disperses soot; decide on changes by mileage or hours and by oil analysis rather than colour.
• "The same grade from any brand can be mixed freely": emergency top-ups are understandable, but long-term mixing risks incompatible additive systems and can affect cleanliness and seals.
• "More oil is better": overfilling raises crankcase pressure and loads the oil separation system; fill to the dipstick mark.
• "A higher category always suits my engine": also check viscosity and the manufacturer approvals the manual calls for — some engines set specific limits on ash and phosphorus.

• Store in a cool, dry place away from direct sunlight and rain.
• Keep containers sealed against moisture, dust and contaminants, and use opened packs promptly.
• Keep production batch numbers on record and use stock on a first-in, first-out basis.
• Dispose of used oil and empty containers in line with local regulations to avoid soil and water contamination.

• Selection support: tell us the vehicle or equipment model, ambient temperature and duty cycle in your enquiry and we will point to the specifications we actually offer.
• Technical documentation: for more detailed product information, packaging or bulk supply, contact the sales team through the enquiry form and we will answer with what we have on file.
• Pack choice: the same specification often comes in several pack sizes — pick according to fill volume and stock turnover.
• Samples and volume: for bulk or long-term supply, include the quantity and delivery location in your enquiry.