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Junior Member
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139 Posts
Discussion Starter #1
which oil do you all use and how much? I am a powerstroke owner and my brothers duramax needs an oil change bad. I was going to change it for him before he heads back to his house (10 hr drive) , just wanted to see which oil is the most popular and how much
 

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Gone Fishin...
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3,099 Posts
It takes 10 quarts. Either 5W-40 or 15W-40 in a synthetic. Brand is more of a personal preference.
 

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Gone Fishin...
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3,099 Posts
Your Welcome. For a 5W-40 the most popular choices are (IIRC) Mobil 1 & Rotella T. Good luck.
 

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CRAZY CANUCK
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4,320 Posts
I use Chevron delo 400syn 5-40 :happymugs
 

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Junior Member
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182 Posts
I run Valvoline 15w-40 dino oil, no synthetics here.
 

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dieselgeezer
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18 Posts
Been running synthetics since the early 70's. The only supplier of 15W-40 in full synthetic is Amsoil. I like it but I get tired of paying just under 10 bucks a qt. for it. All other brands of full syn. are 5W-40. IMHO it makes no difference as long as it's CJ or CL rated. I change it every 5-6K or when the DIC says the oil life is 5% or less.
 
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