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09. Are energy conserving lubricants really saving fuel?

Use of energy conserving lubricants provides fuel economy up to 3% in normal driving conditions. Such products are applicable only for the engines designed to be lubricated by these specific oils. Clearances and oil channels in these engines are designed for a thinner oil film and, accordingly, the viscosity of the oil. But in a conventional engine the use of such oils can lead to increased wear.

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