Valvoline Premium Blu vs Valvoline 5w-40 synthetic

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Jan 21, 2013 | 03:50 PM

#11

HeavyAssault

Diesel Wrench

Joined: Jan 2009

Posts: 854

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From: VA

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Nov 10, 2014 | 04:45 PM

#12

Regcab6oh

Newbie

Joined: Nov 2014

Posts: 1

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Quote:

Originally Posted by Mdub707

Many 6.0 owners have used the Valvoline premium blue 5w-40 with good luck. I tried the 15w-40 and hated it, my truck ran immediately worse than the rotella 15w-40 I took out of it.

What were your symptoms while using the valvoline cummins oil? I recently did an oil change and used the cummins oil and my truck instantly ran terrible. Mostly on a cold start. I also came off of using the rotella in my 6.0