Amsoil Signature Series vs Amsoil XL

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2013blackram

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Joined
May 23, 2013
Posts
91
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Ram Year
2013
Engine
5.7 hemi
Something to keep in mind in the extended oil change interval.
Amsoil states that if you have performance mods done to your vehicle. Such as tuner or exhaust they do not recommend going the full change interval. Which should be the case with most oils.
Love my ss oil. It's -40 here and the truck warms up super fast.
 
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