280Topping up engine oils of oil gra de ACEAA ma ximum of 1 litre of AC EA qualityengine oil can be ad ded before the next oilchange without reducing the oil changeinterval. See a djacent table for qualityclasses.If more than 1 litre must be added, the oilchange interval for petrol and dieselengines is reduced to 1 yea r or 20, 000 miles(30,000 km), see adjoining table.The servic e interval d isplay should then bedisregarded.For more information, see the S erviceBooklet.Oil c hange interval s i f top-up q uantity is more than 1 lit re of ACEA qualit y engine oilInterval Engine code Quality classes S AE v iscosity classes1 year or20,000 m iles(30,000 km )Z 18 XE, Z 18 XEL,Z 20 NET, Z 22 SE,Z 32 SEACEA A3,ACEA A3/B3,ACEA A3/B3/B40W-30, 0W-40,5W-30, 5W-40,10W-30, 10W-401 year or20,000 m iles(30,000 km )Y 20 DTH ,Y 22 DTRACEA B3,ACEA A3/B3,ACEA A3/B3/B40W-30, 0W-40,5W-30, 5W-40,10W-30, 10W-40