blue smoke on start up, antifreeze smell in oil on 2004 Chevrolet Silverado 1500

on cold start blue exaust smoke, antifreeze smell in oil, no check engine light on

1 answer
the blue smoke on startup sounds like worn out valve guide seals or worn valve gudes. I don't know about a coolant smell in the oil, if the oil is clean and clear there's no coolant in it. Coolant in the oil looks like a chocolate milkshake, very easy to see.
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