4th Gen Engine and Drivetrain-2010 and Up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Kirkland oil

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Old Jul 10, 2020 | 11:32 AM
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Hexnut's Avatar
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From: Greer, SC
Kirkland oil

I was in my local Costco yesterday and noticed where the familiar Delo and Rotella oil used to be was Kirkland brand Diesel oil. I asked about it and the reply was that Delo and Rotella were not on the order list. I also asked who produced the Kirkland oil and was told it was Warren Manufacturing (if I recall correctly). Can anyone shed more light on this?
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Old Oct 31, 2022 | 10:01 AM
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I also have noticed that my Costco doesn't carry the Delo or Rotella any longer. I use the Rotella T6 5w40 year round, no issues. If I were able to use the 15w40 year round, I wouldn't have any issues with the Kirkland 15w40.
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Old Oct 31, 2022 | 10:02 AM
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I get my Rotella from Amazon......Ben
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Old Dec 6, 2022 | 06:19 AM
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how often do you change oil




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Old Dec 6, 2022 | 09:29 AM
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From: Greer, SC
Originally Posted by haily grace
how often do you change oil
I always change the oil & filter at 5000 miles. I disregard the time limitation because I don't drive that much, otherwise I would change at 2500 miles. The engine might be happy, but my wallet wouldn't.
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Old Dec 6, 2022 | 10:04 AM
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Originally Posted by Hexnut
The engine might be happy, but my wallet wouldn't.
At the current Amazon price of $71.00 for 3 gallons of Rotella T4 and $15 for a Fleetguard filter, mine would be screaming......Ben
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Old Feb 22, 2023 | 12:39 PM
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Just to add to the topic, I change my oil , oil filter and grease the front drive shaft every 5000 Miles. I use the Shell Rotella T6 5w40, truck does well with the T6.
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