Premium only, at least 93 octane! Mine rattles some on that.

It runs beautifully on 89 octane, have even better performance, but knocks terribly hot in traffic with the factory timing spec...

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!