Table 1: The concentration of elements containing in additives, at different distances. Values in parenthesis are due to base oil.

No. Element Kilometer of operation
0 5001000200035006000850011500

(1)S (7000) 1108.3970.4964.7957.5960.0940.0935.4907.1
(2)Zn (6.1)784.0743.2711.6650.1580.9467.5355.6249.9
(3) P (5.7)811.2793.9773.5738.0686.6603.5505.1411.9
(4) Mg (0.3)228.9228.3227.6225.4223.2222.1214.7202.7
(5)Si (3.1)61.460.960.159.159.151.550.750.1
(6)Ca (<DL)56.753.551.946.943.736.429.422.3
(7)Ba (<DL)29.429.128.427.826.923.823.723.4
(8)B (6.5)6.76.25.75.34.83.83.53.3
(9)Mo (6.4)6.56.56.56.67.58.28.68.8
(10)Al (5.2)5.15.25.45.95.97.07.38.9
(11)Ag (1.6)1.72.12.22.22.32.22.32.3
(12)Cr (1.1)1.11.61.92.12.22.32.42.7
(13)Ni (1.2)1.11.21.31.41.61.61.72.0
(14)Na (0.4)0.50.70.81.01.11.01.21.2
(15)Mn (<DL)<DL0.81.11.42.63.24.515.5
(16)Fe (<DL)<DL2.43.75.26.98.610.111.8
(17)Cu (<DL)<DL0.40.81.21.81.82.12.5
(18)Sn (<DL)<DL0.40.80.80.91.01.31.4
(19)Ti (<DL)<DL0.40.81.11.81.81.91.9
(20)V (<DL)<DL0.50.71.31.81.81.81.9
(21)Pb (<DL)<DL<DL<DL<DL0.10.20.20.6
(22)Cd (<DL)<DL0.50.50.50.60.60.60.6
(23)Sb (<DL)<DL0.30.50.60.70.70.80.8
(24)K (<DL)<DL<DL<DL<DL<DL<DL<DL7.4