Thread: 1991 420SEL feul consuption ?
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Old 04-18-2002, 09:09 AM
acerejo acerejo is offline
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Join Date: Apr 2002
Location: Connecticut
Posts: 61
1991 420SEL fuel consumption
Had a similar problem with 1986 420 and replaced the oxigen sensor due to a failed emissions inspection. The mileage went up to over 20mpg on mixed driving.
Armind
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