They are self adjusting hydraulic. Sometimes synthetic oil helps the ticking and sometimes it takes a couple of thousand miles to hear the difference. Make sure the tension shock dampner and belts and pulley are in good shape. They definately can cause unwanted noise if they are not up to snuff.

Also on next oil change make sure the o-rings on the shaft that goes all the way down into the filter are good or just replace them. Sometimes that gives better oil pressure to the top of the motor.

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-disav

99 E300 TURBODIESEL Astral Silver 282K - AMG brakes, suspension, monoblocks, speedo & interior - Full Load Maxed on IP by custom Speed Tuning USA Chip - T3/T4 Garrett - EGR/MAF delete
98 E300 TURBODIESEL Alexandrite Green on black leather 289K
95 E300 DIESEL Green Queen 267K SOLD
84 300D 216k SOLD
87 300D 299K #22 head - intercooler - full load adj. - 8sec 0-60mph - SOLD
76 300D 214K SOLD