I'd try it. I'm running Motorcraft 5w20 in our Aspire that has a Mazda designed 1.3L. It loves that particular oil. If you taken care of it I wouldn't worry about killing it the Aspire has 208k on it. With all the changes I can't say for certain but I think it gave me about a 2 mpg increase.
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04 Escape 3.0L - 91 Festiva /Auto
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