Easy! Diesel motors do not have spark plugs or plug wires. When the igniton
is turned "on", if there is an amber light on the dash (glow lite), it's a
diesel. The only six cylinder diesel Mercedes ever imported in the 124 body
was in 1987. This turbo diesel has specific badging on the back trunk lid.
It would read,
300D on the left and TURBO on the right. The six cylinder is better than the
five and is extremely durable, just don't use green antifreeze and change
the brake, tranny, and oil as required. PK
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