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Can Leftover Oil be Combined and Used in the Next Oil Change?
 
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Question:
Can Leftover Oil be Combined and Used in the Next Oil Change?
After the tech puts in about 4 quarts of Mobil 1 in my car, he invariably leaves a little oil at the bottom of each bottle. So I was wondering if you can combine the leftover Mobil 1 in each bottle into a single bottle and use it 6 months later during a new oil change? Thanks.
-- Ray Kos, Columbia, MO
Answer:
There is no problem with conserving oil.  Use the leftover oil in your next oil change.
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