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Is Warranty Impacted by Using Mobil 1 Extended Performance?
 
Ask Your Stickiest Question. . . Or ask us something you’ve always wanted to know about using our products. We’ll sort through all the submissions and present the best questions to our automotive experts. We'll share the questions and their answers here.
Question:
Is Warranty Impacted by Using Mobil 1 Extended Performance?
My 2009 Z06 Corvette GM manual recommends Mobil 1, 10.5 quarts of 5W-30. Will there be any warranty issues if I use Mobil 1 Extended Performance 5W-30? Are they interchangeable? What are the 'pros' and 'cons' of switching?
-- JD Smith, Cedar Creek, TX
Answer:
There are no warranty concerns with switching to Mobil 1 Extended Performance 5W-30, provided you continue to follow the guidance in your owner's manual for the appropriate oil drain interval.
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