The answer to this question depends on the technology used. Although some older vehicles allow the same lubricant to be used for both the engine and the gearbox, new vehicles require different products for each. Follow the manufacturer's recommendations.
Most popular questions
Can I put in my gear-box the same oil as in my engine ?
Can I use diesel engine oil in a petrol engine, and vice versa ?
Petrol and diesel engines have different lubrication requirements. During development, lubricants undergo a number of tests, some common to diesel and petrol engines and others specific to one or the other type, that categorize their performances. At the end of this process, they are awarded an API or ACEA/CCMC compliance standard. These specifications characterize the acceptable functioning of the lubricant in each type of petrol or diesel engine. Lubricants for four-stroke engines usually comply with both petrol and diesel specifications. For example, an API SJ/CF lubricant meets petrol specification SJ and diesel specification CF. But this does not necessarily mean that it will perform in the same way in both petrol and diesel engines. This is why Elf has developed specialized ranges, optimized either for petrol or for diesel.
Can I mix two different types of oil ?
Lubricants are always optimized to meet the requirements of international classifications (API, ACEA). However, there are many ways of formulating a specific type of lubricant. Mixing two oils that have equivalent properties will not pose a problem, but final performance cannot be guaranteed. All market oils (petrol engine or diesel, mineral or synthetic) are mixable. However, a blending of two oil qualities lower the superior quality.
Can I use car engine oil in my motorcycle ?
No, because motorcycle four-stroke engines do not operate under the same conditions as those of cars (higher engine rpm and temperature). The engine lubricant can also be used to lubricate the gearbox and the clutch, which requires a formula with EXTREME-PRESSURE ADDITIVES. On the other hand, passenger vehicle lubricants contain DETERGENT ADDITIVES with a high ash content. In motorcycle engines, these cause deposits to form on the valve train and the piston crowns, which can result in valve burning or piston perforation.
What causes oil pressure to drop ?
During normal vehicle operation, oil is vital to ensures leak tightness between the combustion chamber and the crankcase. The oil pressure indicator shows how well this is being done.
An unusual drop in oil pressure can result from either lower engine oil viscosity due to dilution by fuel (injector problem or use at low load) ; too little oil in the lubrication system (due to an oil leak, excess oil consumption, or failure of the oil circulation pump) ; or even mechanical part wear.
Does the oil have to be topped up ?
The engine oil level should be checked regularly to prevent incidents. A small amount of the oil that circulates in the engine is always burnt (an engine in good condition consumes between 0.2 and 0.5 liters of oil every 1,000 kilometers), but successive top-ups are no substitute for an oil change.
Accordingly, it is natural that an engine consumes a small amount of oil, which can be offset by top-ups between oil changes; however, excessive need for top-ups can be an indication of mechanical problems (leaks, etc).
What does a lubricant do ?
Any vehicle owner knows that lubricants are vital to the correct operation of your engine :
- cooling engine hot spots and moving parts,
- ensuring that engine parts remain clean
- ensuring leak tightness between engine parts,
- protecting the inner surfaces of the engine against corrosion,
Additives bring their help, with the detergent and dispersant additives, and the additives against corrosion.
What are the advantages of a quality oil ?
A good quality oil provides motorists with a number of benefits :
- easier cold start and reduced wear (20 to 30% of engine wear occurs between startup and the time the engine reaches optimal temperature),
- longer engine life,
- fuel savings as a result of reduced friction of moving parts and better engine performance.
What is the advantage of keeping up with the new technologies ?
In the area of technology, engine lubricants must consistently evolve toward higher performance levels, linked to engine advances, use, manufacturer requirements, and requirements of users and law-makers :
- more stringent environmental requirements,
- on going rise in engine power,
- lower oil crankcase capacities,
- longer periods between oil changes.
Which oil should we use in turbo compressed vehicles ?
Are all oils adapted to vehicles equipped with a catalytic converter ?
Can you chose another viscosity grade when changing oil ?
What should I do with used oil ?
Pour it in the backyard ? It?s against the law !
The quality of oils and their biodegradability have improved but these products are filled with particles of pollution which can be harmful to the environment. You may deposit your oil in special containers which can be found in the parking lots of supermarkets or at your neighbourhood garage.
- At least once a year
- The frequency recommended by the manufacturer may be modified according to: - The lubricant used, - Vehicle use (country, city, highway), - Thermal and mechanical requirements.
- Never drive with an oil level below the minimum mark on the dipstick Below this mark there is not enough oil, thus causing more rapid circulation of the fluid and accelerated wear on the oil.
- It is recommended to check the level regularly every 1,000 km and especially before a long trip.