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SVT Shelby GT500
Motorcraft 5W50 VOA
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<blockquote data-quote="UnleashedBeast" data-source="post: 10312734" data-attributes="member: 112023"><p>I made another long distance road trip today, and it's the first trip using AMSOIL 10W-40. I expected an increase in fuel economy, but not 2 mpg. </p><p></p><p>Yep, you heard me right. Last trip the GT500 averaged 18.1 mpg. </p><p></p><p>This trip It average 20.2 mpg. </p><p></p><p>All conditions were the same: temperature, speeds, distance, road traveled, etc.</p><p></p><p>The only change was the oil, as 10W-40 is thinner than 20W-50 or 5W-50. My car never achieved this with the factory fill of 5W-50.</p><p></p><p>I was able to drive all the way there (215 miles one way), and almost half way back. I'm really liking the change so far.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 10312734, member: 112023"] I made another long distance road trip today, and it's the first trip using AMSOIL 10W-40. I expected an increase in fuel economy, but not 2 mpg. Yep, you heard me right. Last trip the GT500 averaged 18.1 mpg. This trip It average 20.2 mpg. All conditions were the same: temperature, speeds, distance, road traveled, etc. The only change was the oil, as 10W-40 is thinner than 20W-50 or 5W-50. My car never achieved this with the factory fill of 5W-50. I was able to drive all the way there (215 miles one way), and almost half way back. I'm really liking the change so far. [/QUOTE]
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