disc defrag-log as administrator, right click on my computer, then righ manage.

I would get a program such as registry mechanic. Cleans up your registry and keeps it tighty which makes the pc run nice.

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)