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Message: <blockquote data-quote="stormhunt3r" data-source="post: 288238" data-attributes="member: 3538">i can't really differentiate the color of the smoke. mine had smoke when i start then engine and i think it's white/ grey color. Then when i adjust the rpm to go higher eg 700-750, the smoke went off. I suspect that it's water condensation. Teejay, since u mention engine oil depleting faster. When i was using castrol 15w40, my engine oil level drops pretty fast. Before it reaches 5000km service interval, it would drop to the middle. Then i need to top up. What could be wrong? I've changed to ZIC 10w40 engine oil now and had been monitoring the engine oil level and it seems to be ok for now. Would 10w40 be too thin for my 1985 m20 engine?</blockquote>