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Yesterday I changed my oil after my oil life indicator said 21%. I had Penzoil Platinum Synthetic 5w30. I noticed I only had about 3 quarts of used oil when I had originally put in 5 quarts. I do have a bad thermostat and/or seal thats causing me to drive at 160F in freezing cold temperature. Is this why I'd burn oil? Dirty CAI filter?
 

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Don't you check your dip stick between Oil changes? It's there for a reason .
 

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You always need too. How else will you know if Oil is going down.
 
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