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274 Service, maintenance Diesel fuel filter On each engine oil change, have the fuel filter checked for any water residue by a 1) Z 19 DT, Z 19 DTL and Z 19 DTH , control indica tor A illuminates if there is water in the diesel fuel filter. if the v ehicle is subjected to extrem e (primarily in coastal areas), extrem ely high sub stantially v arying daytim e a nd nig ht- Coolant The glycol-ba sed coolant provides exc ellent corrosion protection for the as anti-freeze protection down to ap prox. throughout the year and need not b e that you use only approved anti-freezes. Anti-freeze a nd corrosion protection Before the start of winter, have a work shop freeze level must guarantee protection freeze will reduce the frost p rotection level add anti-freeze. have concentration checked and a dd anti- 1) Sales designation – see page 28 4, 285. 9 Warning Anti-freeze is a danger to health; it m ust therefore be k ept in the original conta iner |