Correct answer
Engine oil is being burned.
It usually indicates oil burning in the engine. Possible causes include worn piston rings or valve-sealing components, but colour alone cannot identify the fault with certainty. Check consumption and follow manufacturer and workshop guidance. Oil consumption is not fuel consumption. Do not confuse it with temporary white condensation vapour or interpret every white plume as burning oil.
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Any white smoke proves that the air filter is dirty.
Engine oil is being burned.
The colour identifies the exact faulty injector with certainty.
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