Yeah, you CAN use 87 octane, but I'd not. Use 91 octane or better. You could use 80 octane if you didn't car how long it ran.....

I run all the gassers on 92 or 93 octane premium. They all run better on it, even the 280 SE pings on midgrade.

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!