Dodge Ram 6.4 Heavy duty V-8 gas
Says premium gas is recommended?.. What is the downside if regular gas is used? Some folks are telling me nothing other than a slight decrease in power?.. Ram dealers in my neck of the woods ar...
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You can use either one. When I had my 6.4 I ran regular for the first year. After talking to a bunch of people running premium I started to also. I found the truck ran a lot better, had better mileage and found it had more power. But I wasn't going from 87 to 89. I was running 91 or 94 octane.
