FAQs & Tips

S-OIL is a lubricant brand offering products for automotive, commercial, motorcycle and industrial applications. The correct lubricant should always be selected according to the vehicle or equipment manufacturer's requirements.

The S-OIL range may include lubricants for:

• Petrol/gasoline engines
• Diesel engines
• Motorcycles
• Commercial vehicles and fleets
• Gearboxes and differentials
• Automatic transmissions
• Hydraulic systems
• Brake systems
• Greasing applications
• Industrial equipment and machinery
• Other specialized applications

Always check the relevant S-OIL product page and technical information before purchase.

Check:

• Vehicle/equipment make and model
• Manufacturing year
• Engine or system type
• Petrol/diesel/fuel type
• Required viscosity
• Required performance specification
• Manufacturer approvals, where applicable
• Required quantity
• Operating conditions

Check the product label and the relevant S-OIL Product Data Sheet/Technical Data Sheet where available. If you are unsure, contact an authorized S-OIL dealer or technical support team.

Depending on the product, the packaging may provide information such as product name, viscosity grade, performance specification, application information, pack size and batch/traceability details.

Start with the vehicle manufacturer's recommended viscosity and performance specification. Do not select an oil based only on its brand name or viscosity.

No. Viscosity is important, but it is only one part of the selection process. The oil must also meet the required performance specification and application requirements.

Provide:

• Make and model
• Year
• Engine type
• Engine capacity
• Petrol or diesel
• Current oil grade
• Mileage or operating hours
• Vehicle usage
• Manufacturer-recommended specification

This information helps identify the appropriate product.

Viscosity describes how a lubricant flows at specified temperatures. For example, 5W-30, 10W-40 and 20W-50 are viscosity grades.

Viscosity describes the oil's flow characteristics, while a performance specification describes the protection and performance requirements the lubricant is designed to meet.

These numbers identify the lubricant's viscosity classification. They do not, by themselves, tell you whether the oil is suitable for every engine.

Not automatically. Vehicle age or mileage alone is not enough to select a different viscosity. Consider the manufacturer's specification, engine condition, oil consumption, leaks and operating environment.

Petrol engine oil is formulated for gasoline/petrol engines and must meet the viscosity and performance requirements specified for the particular engine.

The correct S-OIL product depends on the vehicle's make, model, year, engine and manufacturer's required viscosity and specification. Check the owner's manual or contact an authorized S-OIL representative.

No. Different engines can have different viscosity, performance and approval requirements.

No. 20W-50 should only be used where that viscosity and the required performance specification are appropriate for the engine.

Neither should automatically be considered better. The correct choice depends on the engine manufacturer's requirements and operating conditions.

Do not assume compatibility. Diesel engines can require different performance specifications. Always check the manufacturer's requirements and the approved product information.

Turbocharged engines can have specific lubricant requirements. Follow the vehicle manufacturer's specified viscosity and performance requirements.

Hybrid vehicles may have specific engine-oil requirements. Use only a lubricant meeting the manufacturer's specified viscosity and performance requirements.

Diesel engine oil is designed for diesel-engine applications and must meet the performance requirements specified by the engine manufacturer.

Selection depends on the engine, vehicle type, model, operating conditions, viscosity and required performance specification.

Not necessarily. Passenger vehicles, commercial vehicles and generators may have different requirements. Always check the equipment manufacturer's specification.

The correct product depends on the vehicle, engine, fuel type, duty cycle, load, mileage and required specification. Fleet operators should consult the relevant S-OIL technical or distributor support.

Heavy loads, long operating hours, high temperatures, towing and other severe operating conditions can affect lubricant requirements and service intervals.

Follow the vehicle/equipment manufacturer's service schedule. The appropriate interval can depend on operating hours, mileage, load, traffic, temperature, dust and usage conditions.

Do not assume that car engine oil is suitable for a motorcycle. Motorcycle engines may have different engine, clutch and gearbox requirements, particularly where the engine oil also lubricates the clutch and transmission.

Not automatically. Motorcycle and passenger-car applications can have different performance and operating requirements.

Check:

• Motorcycle make and model
• Engine capacity
• Four-stroke or two-stroke application, where applicable
• Manufacturer-recommended viscosity
• Required performance specification
• Riding conditions

Yes. Heavy traffic, frequent stop-and-go riding, high RPM operation, long-distance riding and demanding conditions may affect maintenance requirements.

Follow the motorcycle manufacturer's recommended service schedule. Consider both mileage and time, as well as riding conditions.

Gear oil is a lubricant designed for gear systems such as certain manual transmissions, differentials and other gear applications.

Do not assume that engine oil and gear oil are interchangeable. Different systems require different lubricant specifications.

Select the product according to the gearbox, differential or equipment manufacturer's specified viscosity and performance requirements.

No. Gearboxes and differentials can require different lubricant specifications.

Follow the vehicle or equipment manufacturer's maintenance schedule and recommendations.

Avoid mixing unless compatibility has been confirmed. If uncertain, consult an authorized service point.

ATF stands for Automatic Transmission Fluid. It is formulated for applications that require a specific automatic-transmission fluid specification.

No. Automatic transmissions can have very specific fluid requirements. Always follow the vehicle manufacturer's specification.

Do not assume that ATF and gear oil are interchangeable. Use the lubricant specified for the particular system.

Avoid mixing different fluids unless compatibility has been confirmed for the specific application.

The consequences depend on the transmission and fluid involved. If the wrong fluid has been added, seek qualified technical advice before continuing to operate the vehicle.

Hydraulic oil is a lubricant/fluid designed for hydraulic systems and must meet the requirements of the particular hydraulic equipment.

Hydraulic fluids may be used in equipment such as industrial machinery, construction equipment, agricultural machinery and other hydraulic systems.

Do not assume this is suitable. Hydraulic systems require the fluid specified by the equipment manufacturer.

Consider:

• Equipment manufacturer
• Hydraulic system design
• Required viscosity
• Operating temperature
• Pressure/load
• Operating environment
• Manufacturer-required specification

Avoid mixing unless compatibility is confirmed.

Water, dust, dirt, metal particles and other contaminants can affect lubricant condition and equipment operation. Keep hydraulic oil clean and properly stored.

Brake fluid is a specialized fluid used in hydraulic braking systems. It must meet the specification required by the vehicle or equipment manufacturer.

No. Do not substitute engine oil, ATF, gear oil or other lubricants for brake fluid.

Use the exact brake-fluid type and specification specified by the vehicle or equipment manufacturer.

Do not mix brake fluids unless compatibility is specifically confirmed.

Check the vehicle manufacturer's guidance and have the braking system inspected by a qualified technician, particularly if the level repeatedly drops.

Grease is a semi-solid lubricant used in applications where a grease is specified for lubrication and retention.

Grease can be used in bearings, joints, chassis components and industrial machinery, depending on the application.

No. Greases can differ in thickener type, base oil, consistency and performance characteristics.

Do not mix greases unless compatibility has been confirmed. Incompatible greases can affect lubrication performance.

Check the equipment manufacturer's requirements and consider load, temperature, speed, water exposure, bearing type and operating conditions.

Follow the equipment manufacturer's lubrication schedule. The interval depends on the application and operating conditions.

An oil treatment/additive is a product intended for use with a lubricant for a particular purpose. It should only be used when its compatibility and application are confirmed.

Not necessarily. Use only products recommended or approved for the particular application.

Do not assume compatibility. Check the product instructions and vehicle/equipment manufacturer's requirements first.

Lubricant additives should not be treated as a substitute for diagnosing and repairing mechanical faults.

No. Follow the product instructions and specified dosage.

Selection depends on the equipment manufacturer, machine type, application, load, speed, temperature, environment and required specification.

No. Different machines and systems may require different lubricants.

Provide:

• Machine/equipment make and model
• Application
• System type
• Current lubricant
• Required viscosity
• Manufacturer specification
• Operating temperature
• Load and speed
• Operating hours
• Environment

Yes. For critical equipment, approved oil sampling and trend analysis can help identify wear, contamination and maintenance requirements.

Maintain records of lubricant grade, quantity, oil-change date, mileage/operating hours, filter replacement and any abnormal symptoms.

Follow the vehicle manufacturer's recommended service interval. Severe operating conditions may require closer attention to the service schedule.

Park safely on a level surface, follow the vehicle manufacturer's instructions, allow the oil to settle as required, check the dipstick or approved electronic gauge and avoid overfilling.

The oil filter captures contaminants from the lubricant. Replace it according to the vehicle or equipment manufacturer's service schedule.

Use the manufacturer's specified capacity. Add oil gradually and recheck the level rather than relying only on the bottle size.

Overdue maintenance can affect lubrication, cleanliness and engine protection. Follow the recommended service schedule.

Yes. Check the oil level, leaks, warning lights and service condition before travelling.

Yes. Record the date, mileage or operating hours, lubricant grade, quantity, filter replacement and workshop details.

Possible signs include a low dipstick reading, frequent top-ups, visible leaks, smoke, unusual noise or an oil-related warning light. These symptoms should be properly inspected.

Stop safely when appropriate and follow the vehicle manufacturer's guidance. Seek qualified assistance rather than continuing to drive without diagnosis.

Possible causes include leaks, operating conditions, engine wear or other mechanical issues. Record the rate of oil loss and have the vehicle inspected.

It can indicate moisture, contamination, aeration, fuel dilution or another issue. Oil appearance alone should not be used to make a final diagnosis.

Stop safely when appropriate, check warning indicators and contact a qualified technician. Provide details of the service and lubricant used.

Do not assume the vehicle is safe to operate. Check the manufacturer's guidance and consult a qualified service point regarding draining, correcting or flushing the lubricant.

Avoid mixing lubricants unless compatibility is confirmed for the specific application.

Do not mix simply because both oils are engine oils. Follow the manufacturer's specification and seek technical advice where necessary.

A change may be possible in some applications, but viscosity, specification, compatibility and service procedure should be confirmed first.

No assumption should be made. Each system may require a different lubricant and specification.

Bulk/drum availability depends on the product, market and current S-OIL supply arrangements. Contact S-OIL Pakistan or an authorized distributor for current availability.

Bulk supply can be relevant for:

• Industrial customers
• Manufacturing plants
• Workshops
• Transport fleets
• Commercial vehicle operators
• Agricultural operations
• Construction companies
• Large equipment users

Provide:

• Product required
• Lubricant grade/specification
• Required quantity
• Pack format
• Application
• Equipment/vehicle type
• Delivery location
• Expected consumption
• Required delivery schedule

Yes. Submit a business enquiry with the product, quantity, pack size and delivery requirements.

Keep drums sealed, upright where appropriate, clean and protected from water, dust, direct heat and extreme temperatures. Follow the product's storage guidance.

Avoid transferring lubricant into unmarked or contaminated containers. Keep product identification and traceability information available.

Workshops and business customers can contact an authorized S-OIL distributor or submit a business enquiry for product availability, technical questions and supply requirements.

Keep the container sealed, upright where appropriate, clean and dry, away from water, dust, direct heat and extreme temperatures.

Close the original container securely, keep the label readable and prevent water, dust and other contamination from entering.

Yes. Poor storage can introduce water, dust or contamination. Always inspect the packaging and follow product-specific storage guidance.

Check the packaging condition and product traceability before use. If there is any concern, contact an authorized S-OIL representative.

Use only officially approved authenticity checks such as packaging details, labels, batch/traceability information, security codes or authorized seller verification where applicable.

Authorized channels provide access to genuine products, correct product information and an official route for support and complaints.

Do not rely on the product for a critical application. Keep the packaging and purchase receipt and contact S-OIL through an official channel.

Yes. Keep the receipt or invoice, particularly for warranty, complaint, authenticity or product-support purposes.

Purchase through the authorized S-OIL dealer/distributor network. Use the official S-OIL dealer locator or contact S-OIL Pakistan for the nearest authorized source.

Generally, a dealer serves end customers and workshops, while a distributor supplies dealers, workshops or business customers within a defined area.

The website should provide a dealer/distributor locator allowing customers to search by city, area or postal code.

Use the official customer-support or enquiry channel to request the nearest authorized contact.

Never pour used oil into drains, soil or water. Keep it in a suitable sealed container and hand it to an approved workshop, collection or recycling channel.

Used filters and contaminated materials should be handled separately according to applicable local workshop, collection or recycling procedures.

Used lubricant can contaminate water and soil. It should be collected and handled through an appropriate disposal or recycling channel.

Check the vehicle make, model, year, engine/fuel type, mileage, manufacturer's recommended viscosity and specification.

Record:

• Date
• Vehicle/equipment
• Mileage or operating hours
• Product and viscosity
• Quantity used
• Filter replacement
• Technician/workshop
• Leaks or abnormal symptoms

Add oil gradually, keep the filler area clean and recheck the level to avoid overfilling.

Refer uncertain cases involving specification, compatibility, industrial applications, repeated oil loss, warning lights, suspected contamination or product-authenticity concerns to qualified technical support.

Use the official S-OIL Pakistan complaint/customer-support channel and provide the product name, batch/lot information, purchase location, receipt and relevant photographs or details where requested.

Yes, where available, customers can request the relevant Product Data Sheet/Technical Data Sheet for the product and application.

Customers can request the applicable Safety Data Sheet through the approved S-OIL technical/product support route.

Provide as much relevant information as possible:

• Vehicle/equipment make and model
• Year
• Engine/system type
• Current lubricant
• Required specification
• Operating conditions
• Mileage/operating hours
• Product name and grade
• Quantity required

This allows the technical team to assess the application more accurately.