Half pint MMO with 5 quarts oil instead of 4.5 quarts? 
Posted: 13 January 2015 06:13 PM   [ Ignore ]
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I Have a Corolla 2011 with 0w20 4.4 quarts. Mechanic puts in 5 quarts and swears the extra half quart won’t do any harm at all (it was Mobil 0w20). But now will I be able to put in half pint of MMO?

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Posted: 02 February 2015 02:56 AM   [ Ignore ]   [ # 1 ]
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Sure, you’ll be fine.

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Posted: 19 March 2015 08:54 PM   [ Ignore ]   [ # 2 ]
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The increase in oil pressure will reduce your gas mileage - greater forces inside the engine to overcome. Also the added pressure could blow out a seal or even a gasket but not likely

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