What fuel should I use

25

Asked by Jun 07, 2007 at 09:40 AM about the 2000 Mercedes-Benz M-Class ML 320

Question type: General

5 Answers

33,175

On that car premium is recommended (I think, check owners manual) but I don't think it would be absolutely terrible for you to use regular.

1 of 1 people found this helpful.
485

Premium, the 320 uses 12 spark plugs, 87 octane does not burn hot enough and the engine will knock....

1 of 1 people found this helpful.

premium only.

45

When I first purchased my 1999 ML320, I ran noting but premium. At 80,000 miles, I replaced 3 cats. Not long after that, I switched back to regular. At 180,000 miles, my mileage is the same, and I have yet to replace another cat. It makes no difference what so ever, except of course, your pain at the fuel pump.

4 of 4 people found this helpful.
30

My 1999 ML320 has 240,000 miles, with the last 115,000 run exclusively on 87 octane. With minimal maintenance it hasn't knocked at all & I'm getting 19+mpg in town, 21-22 mpg on the road.

3 of 3 people found this helpful.

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