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Old 03-05-2005, 10:28 AM
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Join Date: Mar 2005
Location: holland
Posts: 3
what is the best fuel for the 190 E 1.8 1992

Can someone tell me what is the best fuel for a mb 190E 1.8
euro 95 unlead
euro 98 unlead
shell pura
or something else

my dealer say it is shell pura but he has also a shell gasoline station

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Old 03-05-2005, 11:15 AM
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Join Date: Mar 2003
Location: Southern California
Posts: 2,272
Since most of the folks on this board are in the US, it will be tough for us to recommend a European fuel since our octane ratings over here are measured and reported using a different methodology than yours (which results in a number about 4 less for a fuel with equivalent detonation resistance), and the 1.8L engine was not sold in the US market.

Most US market engines of the era except the early 2.3s with 8:1 compression ratio require a 91 octane fuel, which is roughly equivalent to your 95 octane, however, most will operate satisfactorily on lower octane, especially in cool weather. The later 2.3s have a CR of 9:1 and the six-cylinders are 9.2:1, and the early low compressions 2.3s only required a US 87 octane, which would be about 91 in Europe.

Do you know the specified compression ratio of your engine? Does it have a catalyst? Also, does it have a rotary knob on the left side inner fender apron next to the EZL igntion module?

Duke

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