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fuel economy
So i went to the garage yesterday, and my mecanic told me i have a oil leak on my valve cover gasket, but i forgot to ask him if this can be related to my high gas consumption, i remember when i got the car 5 year ago it was around 17l/100km... now its around 22l/100km (i do almost city, no heavy foot), i just replace my air filter a week ago, my spark plug was change 5 year ago(now maybe they are sunk with oil and it doesnt help).... no rough idle, no giveaway sign of missfire, no code triggered... what can cause the extreme high fuel consumption ?
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BMW X5 3.0i 2006
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