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Message: <blockquote data-quote="dennishoddy" data-source="post: 4247253" data-attributes="member: 5412">I overhauled some engines that looked worse than that back in the day. Nobody changed oil back then much, just added when it got low. When they did buy oil, some gas stations offered reclaimed oil that they had ran through a filter and put on the shelf in glass bottles. One 283 chevy we pulled the intake off of had the valley completely full of gunk to the bottom of the intake manifold. He was adding a quart for a trip across a small town for years to get to work, then adding another when getting home. No skeeters on his route. The blue smoke from the exhaust surely killed them all.</blockquote>