02 Duramax Amsoil 15W40 HD Marine/Diesel

[cargopilot]

Hi All,

First post here. Just got my first analysis back from the lab. Lab comments were good, thought I would seek more input. The truck has just over 25,000 miles on it and the oil had 6,600 at the sample. Added 1/2 quart makeup oil.

I have the Amsoil dual remote bypass filter installed. Must do a decent job as the lab's comment was:

"Insolubles (oil oxidation due to heat, use, and blow-by) were very low at 0.1%, showing excellent oil filtration."

TBN 10.1

ALUMINUM 1
CHROMIUM 0
IRON 5
COPPER 7
LEAD 4
TIN 2
MOLYBDENUM 0
NICKEL 0
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 1
BORON 0
SILICON 6
SODIUM 1
CALCIUM 3699
MAGNESIUM 25
PHOSPHORUS 1049
ZINC 1180
BARIUM 0

SUS VIS @ 210F 72.8
FLASHPOINT 455
FUEL WATER 0.0
INSOLUBLES 0.1

Lab said they think the oil could go another 2,000 miles.

Comments welcome!

 

[wwillson]

Those wear numbers are absolutely incredible! Are you sure this isn't a virgin oil sample?

What type of driving to you do?

 

[N2OIL]

Do you have an oil life monitor?

 

[cargopilot]

quote:

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What type of driving to you do?

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Basically just around town. Drive to and from work about 6 times a month which is 60 miles roundtrip. I pull a 13,000# 5th wheel camper a few times a year a total of about 3,000 miles.

As you can tell from the total mileage on the truck, I don't drive a whole lot. I have owned it since January 02 and 2 1/2 years later it only has 26,000 on it.

I thought my numbers might be a lot worse since the first couple of winters I let the truck idle ALOT, and I don't have high idle installed. I since quit doing that since I read about that not being good for the engine. I installed an Espar coolant heater so no need to idle anymore!

 

[cargopilot]

quote:

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Do you have an oil life monitor?

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If you are talking about the one from the factory that comes on and says "CHANGE ENGINE OIL", yes, I have that. It came on last time at about 5,500 miles on the oil.

 

[Quick_lude]

quote:

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Originally posted by cargopilot:


As you can tell from the total mileage on the truck, I don't drive a whole lot. I have owned it since January 02 and 2 1/2 years later it only has 26,000 on it.

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With those kinda wear nubmers and TBN, I'd say you can easily go for one year/10,000 mile changes.

 

[Hasbeen]

Dang, With #`s like that, That engine is going to outlast us all.

 

[TexasTDI]

quote:

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Originally posted by Quick_lude:
With those kinda wear nubmers and TBN, I'd say you can easily go for one year/10,000 mile changes.

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I agree.

Go at least 12 months / 10k miles and sample again and let us know what it says.