MG ZR Series Owner's Manual page 123

Engine
To top-up, remove the oil filler cap and add oil to maintain a level
between the upper and lower marks on the dipstick. As a general
guide, if the level on the dipstick is:
• nearer to the upper mark than the lower, add no oil.
• nearer to the lower mark than the upper, add half a litre of oil.
• at or below the lower mark, add one litre of oil.
DO NOT fill above the upper mark!
After adding oil, wait for a five minutes and then recheck the level
and add more oil if necessary. Finally, ensure the dipstick is
replaced and the filler cap replaced and fully tightened.
Oil specification
Petrol engines: Use any brand of 10W/40 engine oil meeting the
specification: ACEA A2.
NOTE: With the exception of 1.8 - 160 models, ACEA A1 oils can
also be used - the A1 specification may improve fuel economy.
4
Diesel engines: Use any brand of 10W/40 or 15W/40 engine oil,
meeting the minimum specification: ACEA B2.
Oils manufactured to the above specifications are suitable for use
in temperatures between -20°C to +30°C (if climatic temperature
falls outside these limits, seek advice from your dealer).
NOTE: Mixing oil additives with the engine oil is not recommended and
could damage the engine.
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