what are you running?
i have ran mobile 1 oil but its also almost $30 a gallon, so i switched to 15W40 rotella t 6 because thats what the local delership uses and now my lifters are noisy as he#@, but its a lot cheaper!!! what have you ran and what works best and quietest for you?:humm:
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Amsoil in everything.
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I'm thinking bout switching to the valvoline premium blue 15w-40.. recommended by cummins.. ill give it a shot... Im running rotella 15w-40 right now..
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Ii run valvoline synthetic. Cummins recommends that if you run synthetic use a 5-40, 15-40 for conventional.
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Rotella 15W-40
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Originally Posted by s10driver85
(Post 944968)
Ii run valvoline synthetic. Cummins recommends that if you run synthetic use a 5-40, 15-40 for conventional.
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I have heard of this before, just use the oil you did before.
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Rotella T-6 5w-40 syn. and never had any issues. Been running it for over 6 years, year around, towing or not. I change the oil every 7k miles religiously.
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Originally Posted by minncountryboy
(Post 944917)
I'm thinking bout switching to the valvoline premium blue 15w-40.. recommended by cummins.. ill give it a shot... Im running rotella 15w-40 right now..
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Originally Posted by Bigred7.3
(Post 945714)
i run the valvoline also, i used to run the rotela in my fords, although last oil change i went cheapy n got a 5 gallon jug of 15 40 coastal which my dad runs in his macks and peterbuilts. but nxt change im going back to valvoline its cummins approved/recomended which is all i need to kno. lol
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