When my cars temperature surpasses 80*C, the valves begin rattling on acceleration. Last week, I put a bottle of Techron in it and it did not help at all. I still have the rattle. Today my engine temperature reached 100*C and it was really rattling.

Is my engine just worn out or what? It does NOT leak or burn ANY oil. BTW - it is a 380SE.

Thanks in advance.

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2004 Toyota Sequoia Limited 4wd
1991 Lincoln Town Car Executive
1991 Cadillac Sedan DeVille
1988 Mercedes 300SEL
1972 Chevrolet Caprice Kingswood Estate 9-passenger wagon
1973 Pontiac Grand Ville
(Prior MB's: 1974 240D, 1985 380SE, 1984 190D, 1993 400SEL)