ram5.7hemi
Senior Member
- Joined
- Oct 11, 2013
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- 443
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- 33
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what type of gas is best for the hemi? i have an 08 5.7 laramie. 4x4 20 inch rims, volant cold air intake.. and a dual exhaust... not sure if its stock or aftermarket dual exhaust.. does putting 91 octane fuel in your truck give you better performance and better mileage?