Thin Engine Oils - GM Recall

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Gained or lost? Was your gas mileage better before or now?
I gained 3-4 mpg with the thicker oil. I am not buying thin oil BS for better mpg. I have no idea why they push the thin oil. End of the day. The 0w-40 offers better protection especially from heat. I use Mobile one supercar, change every 3500 - 4000 miles.
 
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I gained 3-4 mpg with the thicker oil. I am not buying thin oil BS for better mpg. I have no idea why they push the thin oil. End of the day. The 0w-40 offers better protection especially from heat. I use Mobile one supercar, change every 3500 - 4000 miles.
Good to know - hope I get the same effect.
 
This 7,000#+ truck couldn't gain 3-4mpg from having a hurricane push it down a hill in neutral.
 

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