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Old 02-23-2013, 02:59 AM   #6
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Originally Posted by adam6976 View Post
Well ITS was at our Walmart hate that place ,anyway they have ford motorcraft 5 w 20 full syn 5 qt jug for $17 . I have always ran castrol gtx in all my other cars , never used full syn . Just askin for opinions. Keep on
That oil is a semi-synthetic oil, not a full synthetic oil. It's a decent oil, but adding petroleum oil to a synthetic oil only serves to reduce the performance of the synthetic oil.

You wont generally find high-end products at Walmart.

Read this great article on all the fantastic advantages a true synthetic oil offers vs a dead dinosaur oil; Synthetic Oil:Rx For Long Engine Life -
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