LifeguardFluid DV7

Automatic transmission fluid for smooth and reliable shifting.

Passenger car transmission fluids serve automatic (AT), continuously variable (CVT) and dual-clutch (DCT) transmissions and some steering systems. They do more than lubricate: they transmit hydraulic pressure and control friction behaviour, so matching the specified fluid matters far more than choosing a similar viscosity.

This page covers LifeguardFluid DV7 (7-Speed Dry Dual Clutch Transmission Fluid) — product code DV7; category Automotive Lubricants / Passenger Vehicle Oils / Transmission Fluids; pack 1L. 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.

• 1L：Small pack: convenient for top-ups and small equipment.
• 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.

• Acts as the hydraulic medium that applies and releases clutches, bands or pulleys.
• Provides controlled friction characteristics so shifts stay smooth without slipping or shock.
• Lubricates gears, bearings and bushings to reduce friction and wear.
• Removes heat generated by clutches and the torque converter, limiting thermal ageing of the fluid.
• Inhibits oxidation and deposits while protecting seals and valve-body channels.

• Fluid changes and servicing of automatic transmissions (AT).
• Continuously variable transmissions (CVT).
• Dual-clutch transmissions (DCT).
• Power steering systems that specify the matching fluid.

Compared with engine oil, transmission fluid works in a more enclosed environment with different heat and shear conditions and directly shapes shift quality, so the manufacturer-specified fluid is required and engine oil is not a substitute. Compared with manual gearbox gear oil, automatic transmission fluid emphasises friction and hydraulic behaviour rather than extreme-pressure load capacity.

• 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.