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Home » Public Forums » GMCnet » what could be a small film on TOP of oil/additive? (emptied 2 quarts out of oil pan and discovered thin oil and 1/8" film on top)
what could be a small film on TOP of oil/additive? [message #224749] Mon, 07 October 2013 06:36 Go to previous message
budworks521 is currently offline  budworks521   United States
Messages: 137
Registered: October 2013
Location: Grand Rapids MI 1974 Pain...
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Senior Member
Just before I removed my heads and intake I drained 2 quarts of oil to see if I have coolant in the oil. It appeared to be coolant free but I did notice that the oil had a slight film and clear in color and was wondering if it was gas? Does gas blend with oil? It was right on top of the oil. The shop added an additive to the oil to meet the requirements of that engine. Does the additive mix well when drained? I did read about carbs flooding could lead to gas in oil? Is there a way to check rings on pistons to see if they are bad? I did notice some slight deviations in the walls. Like minor scratches and such. Thanks

1974 Painted Desert 455 upper half rebuild constant project inexperienced mechanic Grand Rapids Mi Always trying to learn
 
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