I Try Again...Highway MPG Test with My 6.6L L8T Gas Engine in 2024 GMC Sierra 2500 HD
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YouTubeAdventure Rocks
I Try Again...Highway MPG Test with My 6.6L L8T Gas Engine in 2024 GMC Sierra 2500 HD
Now that my engine is broken in with over 1,700 miles, an oil change, and a tonneau cover, I try a highway MPG test again to see if those factors make a difference in MPG on the new 6.6L L8T gas engine with 10-speed Allison transmission. If you didn't catch my original MPG run, check out this video here: https://youtu.be/O7MNkCwzv6A 00:00 Intro ...
54.2K viewsJan 31, 2024
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