Home : Your Corner : FAQ

FAQ

Category  

Category : General

Q1.  Can the Engine oil of different companies be inter-mixed?
Q2.  Is black grease better ?
Q3.  It is a popular belief that blue smoke from silencer means bad oil or fuel?
Q4.  Can any oil be used for any vehicle?
Q5.  Is it okay to buy oil from any source ?
Q6.  Is it necessary to change oil that is over a year old ?
Q7.  Is it true that when oil turns black it’s time to change?
Q8.  Does Red Colour mean a better oil ?
Q9.  Why we need to change the oil?
Q10.  What is Low smoke oil for Two Stroke Engines?
Q11.  Why I need to use special 4T oil for my 4 Stroke Motor Cycle Engines?
Q12.  Why there are many types of Engine Oils in the market for Petrol & Diesel Engines?


Q1. Can the Engine oil of different companies be inter-mixed?

Engine oils of the same performance level/specifications are compatible and hence can be mixed / used for top ups.

Q2. Is black grease better ?

Colour does not affect the performance of the grease. Different components in the grease can make the colour of the grease different

Q3. It is a popular belief that blue smoke from silencer means bad oil or fuel?

No, blue smoke is due to oil getting mixed up with fuel in the engine.

Q4. Can any oil be used for any vehicle?

No.  The type of oil is specified based on the design of the vehicle and it is normally recommended by OEMs (full form)

Q5. Is it okay to buy oil from any source ?

Oil has to be bought only from reliable sources else one will end up using inferior quality products resulting in damage of engine  

Q6. Is it necessary to change oil that is over a year old ?

No. Change depends on Kms the vehicle has run, OE recommendations and operating condition.

Q7. Is it true that when oil turns black it’s time to change?

Not necessarily, because oil can turn black due to improper draining of oil while changing, poor maintenance, or quality of previously used oil and fuel, excessive carbon deposits on engine parts etc.. In fact oil will tend to blacken as it cleans the engine & various parts and accumulates dirt particles in itself 

Q8. Does Red Colour mean a better oil ?

Colour does not affect the performance of the oil. Different  colour dyes are added to differentiate brands. Red colour masks oil colour which otherwise looks dark and blackish due to impurities.

Q9. Why we need to change the oil?

The oil quality gets reduced while in service due to oxidation of the oil and/or contamination of the oil and / or depletion of the additives as it gets used up during its service. Oxidation of the Oil in presence of air & high temperature produces acidic and gummy substances. If it is allowed to increase beyond certain limits then it will start corroding the equipment or leave unwanted deposits on the moving parts. Similarly contamination of the oil with water, dust, dirt and soot from combustion products leads to corrosion and abrassive wear. The TBN, Antiwear and performance enhancing additive gets used up in service and below certain levels will not be in a position to protect the equipment. Because of these primary reasons that we need to change the oil once it looses its useful life to protect our costly equipment.

Q10. What is Low smoke oil for Two Stroke Engines?

Faqs What is Low smoke oil for Two Stroke Engines? Why I need to use special 4T oil for my 4 Stroke Motor Cycle Engines? How to select the right viscosity of oil for my equipment? What is Multi-grade Oil & the Benefits of using Multi-grade Oil? Why there are many types of Engine Oils in the market for Petrol & Diesel Engines? What is the purpose of used oil analysis? Why we need to change the oil? When do we change the Oil? Can I use the after market additives in the oil to enhance the performance of the oil? How do I dispose of the Used Oil? Are Biodegradable oils marketed by BPCL? What is Group II base oil? What are the advantages of using Lubricants manufactured with Group II base oil? What is Low smoke oil for Two Stroke Engines? Two Stroke Engines emits the maximum pollutants compared to the four stroke Engines fitted in Cars & two/Three wheeler. The old generation 2T lubricant mixed with petrol and used in two Wheeler contributes more than 70% of the pollutants emitted from the Engines. As the emission norms become stringent, efforts are to reduce the harmful emission from two Wheeler. Only way to reduce the emission from two wheeler is to use the right quality of the 2T oil. By careful selection of the base oil mixed with the right quality and quantity of Synthetic oil and the right blend of performance additives, the emission level can be greatly reduced. Japanese Automobile Standards Organisation is the forerunner in setting standards for two strokes Engine Oil. Their FC specification stipulates a Smoke Index of minimum 80 so that very little pollutants is emitted from the two stroke Engines. Use of an oil meeting the specification requirement of JASO FC will reduce substantially the pollutants emitted by two wheelers. To control the emission from the two Wheeler, The Supreme Court of India allows only JASO FC grade of oil is marketed in India with effect from 1-04-1999. The Two Wheeler user can show their concern to save the Environment by necessarily using oil meeting the JASO - FC standard in their vehicles. Bharat Petroleum Corporation markets only one grade of Lubricant, MAK 2T, for Two Stroke Engines meeting the JASO FC standards to contribute in a little way to save the environment.

Q11. Why I need to use special 4T oil for my 4 Stroke Motor Cycle Engines?

Two Wheeler / 3 Wheeler engines are air-cooled engines unlike the passenger car engines which are cooled by water or by a coolant. The Engines are effectively cooled by the air drag across the engines while the vehicle is in motion. The Engine operating temperatures exponentially shoots up when the vehicle speeds are reduced or the vehicle is stopped since the air drag drastically reduces under these conditions as encountered in a typical city operating conditions. Secondly these vehicles use wet clutch mechanism and the same engine oil lubricates the engine, the wet clutch and the gears. So oil with high Friction Modifier used in Engine Oil will lead to clutch slippage. The Oil used for Four Stroke engines, Two Wheeler / Three Wheeler, need to take care of the higher temperature operating condition as well as it should have controlled friction characteristics to take care of the wet clutch requirement. At the same time it should have reduced friction characteristics as required by the Engines & gears. GLIDE 4T Oil is specially developed to meet these special requirements of this class of vehicles.

Q12. Why there are many types of Engine Oils in the market for Petrol & Diesel Engines?

The development in the Vehicle Engine Technology is moving in a fast pace to take care of the higher power, compact size and the latest emission requirement. Due to these continuos development in the field of Engine Technology, the speed of the engines increases, the oil sump capacity becomes lower & lower, after treatment of the exhaust gases has been introduced (Catalytic Converter, particulate filter etc.). To keep in pace with the development in the Engine technology, the oil performance level also has to be continuously improved to meet the additional requirement. American Petroleum Institute (API) and various International organisation sets standard for the Engine Oil to suit the requirement of the development in Engine Technology. API Oils are classified as SA, SB,….SF, SG, SJ for Petrol Engines and as CA, CB,…. CD, CF4, CG4, CH4 for Diesel Engines. Bharat Petroleum Corporation Ltd., markets oil meeting the latest API & Other international & Indian Standards for use in all type of petrol & Diesel engines.