© Copyright Mahindra & Mahindra Ltd. 082014
14-7
14.11.2 Engine Oil
Engine oil has the primary function of lubricating and cooling the inside of the engine.
It plays a major role in maintaining the engine in proper working order. Therefore, it
is essential to check the engine oil regularly.
14.11.3 Engine Oil Consumption
It is normal for engines to consume some engine oil during operation.
Causes of consumption in a normal engine are as follows;
• Oil is used to lubricate pistons, piston rings and cylinders. Thin films of oil, left over
when pistons move in cylinders, are sucked into the combustion chamber due to
high negative pressure generated when the vehicle is decelerating. This oil gets
burnt in the combustion chamber
• Oil is also used to lubricate the stems of intake valves. Some of this oil is sucked
into the combustion chamber together with the intake air and is burnt there
• Engine oil consumption depends upon the viscosity and quality of the oil, and upon
the conditions in which the vehicle is driven. Oil consumption will be more due to
high speed driving and frequent acceleration and deceleration. A new engine may
consume more oil since its pistons, piston rings and cylinder walls are not
conditioned
14.11.4 Checking/Topping the Engine Oil
• Make sure the vehicle is on level ground
• Turn the engine OFF and wait a few minutes for the oil to settle down into the oil
sump
• Apply the parking brake
• Open the hood. Protect yourself from engine heat
• Locate and carefully remove the engine oil level dipstick
• Wipe the dipstick with a clean cloth. Insert the dipstick fully, then remove it again
• If the oil level is between ‘Min’and ‘Max’marks, the oil level is acceptable. DO NOT
ADD OIL
• If the oil level is below the ‘Min’ mark, add enough oil through the oil filler neck to
raise the level within the ‘Min’ and ‘Max’ marks. Wait for a few minutes after every
top up for the oil to settle down before checking the level.
• Oil levels above the ‘Max’ mark may cause engine damage/poor performance.
• Put the dipstick and the oil filler cap back and ensure it is fully/properly seated.
MAINTENANCE
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