Synthetic Oil

[Huff250]

What brands of synthetic oil is everyone using? What oil filters? How many mile between changes?

I searched the forum and did not find this in any discussion.


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[4x4ord]

I think any synthetic is worth the money but just to be sure I get my moneys worth I use AmsOil 5w40 Diesel oil. I have 12000 miles on it so far and plan to do an oil analysis at about 15,000. If the analysis comes back good I will run it another 10,000 and change it. I am a firm believer that changing oil every 3 - 5000 miles is a waste of money - but it won't hurt anything either.

[thom12]

Do you change out your filter at all during that time?

[jeffc]

Originally Posted by 4x4ord

I think any synthetic is worth the money but just to be sure I get my moneys worth I use AmsOil 5w40 Diesel oil. I have 12000 miles on it so far and plan to do an oil analysis at about 15,000. If the analysis comes back good I will run it another 10,000 and change it. I am a firm believer that changing oil every 3 - 5000 miles is a waste of money - but it won't hurt anything either.

Are you running a bypass? When I looked into extended intervals and Amsoil with my Dodge, most people were running the Amsoil bypass filter. Could have something to do with the lower capacity of the Cummins as well?

[4x4ord]

Originally Posted by jeffc

Are you running a bypass? When I looked into extended intervals and Amsoil with my Dodge, most people were running the Amsoil bypass filter. Could have something to do with the lower capacity of the Cummins as well?

I haven't got a bypass filter installed - just using an Amsoil full flow filter. I am planning on changing the oil every 25,000 miles so I am not expecting to need a bypass filter but I guess I'll have a better idea after I send the oil off for analysis.

[Huff250]

What lab are you sending your oil to?


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[torque beast]

I use Amsoil and just change the filter every 10k and add a quart and change oil at 30k

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[ZMANN]

Originally Posted by Huff250

What lab are you sending your oil to?

Most use Blackstone Labs

Rotella T6 5-40 for Me oh and only Motorcraft filters from dieselfiltersonline.com

[4x4ord]

Originally Posted by Huff250

What lab are you sending your oil to?


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I plan to use http://http://www.polarislabs.com/oil-analysis.php in Edmonton. They also have US locations.

[TW720HVY]

Originally Posted by torque beast

I use Amsoil and just change the filter every 10k and add a quart and change oil at 30k

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Have you sent the oil out for an analyses? I just starting running Amsoil as well.