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Best Diesel Oil?

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Old 01-28-2004, 07:36 AM
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Best Diesel Oil?

What is the best diesel oil for my 6.0L. I am using Shell Rotella-T 15w40. Is there any better oil, I have heard that the Chevron DELO 400 is good......... Help please...........
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Old 01-28-2004, 08:09 AM
ssls6 ssls6 is offline
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Both oils mentioned are good and meet CI-4. I prefer the Delo for the lower pour point and their choice of base stock. The Delo costs a little more but not much.

Either oil should get you to 300k miles. I personally think keeping the rpms below 3k will do more to extend longevity than oil choice.
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Old 01-28-2004, 08:25 AM
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Well, at normal shift points on my truck in Tow/Haul mode the truck turns almost 3500 RPM's. And turns about 2500 RPM's normal driving............... I don't see that RPM's will actually effect the lonjevity of the truck. I hope I don't have this truck even at the 100K Mile mark. Hope to have a newer one by that mileage mark.
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Old 01-28-2004, 08:47 AM
ssls6 ssls6 is offline
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amazing

Quote:
Originally posted by PSD6litre40
Well, at normal shift points on my truck in Tow/Haul mode the truck turns almost 3500 RPM's. And turns about 2500 RPM's normal driving............... I don't see that RPM's will actually effect the lonjevity of the truck. I hope I don't have this truck even at the 100K Mile mark. Hope to have a newer one by that mileage mark.
International's website says the governed speed of the VT365 is 2800 rpm. Peak torque occurs at 1400 rpm. I haven't hauled with my 04 yet but I'm amazed that it shifts at 3500 rpm in tow/haul mode. I would have guessed it would shift at a point where right after the shift it is at peak torque.

Thanks for the info.
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Old 01-28-2004, 08:50 AM
pocobueno pocobueno is offline
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Quote:
Originally posted by PSD6litre40
Well, at normal shift points on my truck in Tow/Haul mode the truck turns almost 3500 RPM's. And turns about 2500 RPM's normal driving............... I don't see that RPM's will actually effect the lonjevity of the truck. I hope I don't have this truck even at the 100K Mile mark. Hope to have a newer one by that mileage mark.
Do you mean 2500 RPM when you're towing? At 70 MPH, I'm doing about 2000 RPM. Just curious about the difference.

poco
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Old 01-28-2004, 11:54 AM
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With Tow?Haul mode on, it seems like it never gonna shift and just keeps winding up. And finally shifts at 3500 RPM's with a load of about 11-12,000 lbs.
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Old 01-28-2004, 08:58 PM
shendren shendren is offline
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delo 400 in my cummins and delo 400 in my psd..
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Old 01-28-2004, 09:38 PM
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In my truck (with December flash) my Tow/Haul shifts (for all gears) are at 2,500 RPM's or so. When in high gear at 70MPH my tach is right on 2,000 steady... Tow/haul or not.

Hope this helps??

Good luck,
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Old 01-30-2004, 05:57 PM
AGE mechanic AGE mechanic is offline
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What does tow/haul shifts have to do with oil?
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Old 01-30-2004, 07:48 PM
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AGE Mechanic,

Don't mean to be smart... and not sure if your speaking to me since I was the last thread poster, but the guy who started the thread asked about oil.... then the same guy switched questions as asked about transmission and Tow/Haul?

Obviously, the topic changed and those of us with experience or an opinion freely gave it....

Yes, your right... Tow/Haul has nothing to do with oil!!!

But Tow/Haul has everything to do with the current topic or the original poster's follow reply & question.

Have a good day (or night).

Thanks,
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Old 01-31-2004, 08:42 AM
AGE mechanic AGE mechanic is offline
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Beachbumcook, Wasnt ment toward you at all. Just got a little frustrated yesterday when the post went way off topic, not by you, and I just typed a little smart a$$ comment.
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Old 01-31-2004, 08:52 PM
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Hey PSDlitre40,

That's a loaded question you originally asked... do you really expect to get 1 solid consensus?

1) Talk to Ford they say Motorcraft?

2) Others say Shell Rotella?

3) Others say Delo 400?

4) Others say Amsoil?

5) Others say whatever????

Personally, it is more important to use a high quality, name brand oil of the proper viscosity and rating as required/stated in your manual. Obviously, synthetic oil has its benefits (as if we didn't already know) for cold weather starts and hot temperature running and/or towing.

My Mercedes went 150,000+ miles on good old fashined crude motor oil (Castrol is what dealer used)... unitl I wrecked it.

My 1996 Lexus LS 400 has 105,000 miles and all I have ever used is the regular oil from the delaership... they just changed to synthetic oil since they are now a Quacker State facility.

Personaly, I change my oil and filter on a regualr basis and have not been conveienced that synthetic is better for me. However, not that I have moved to Kansas City (from Florida) I may change to synthetic for the cold weather operational benefits... but now sure if the additional cost is justified??

Go with your own expereince becuase you'll get 5 - 6 different answers and still will not know??

Good Luck,
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Old 01-31-2004, 09:56 PM
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I've always liked Mobil One Products. In my numerous years of Drag Racing I never lost an engine using it. I did loose oil pressure from broken oil pump shafts but the oil on the bearings did the job for a few seconds until shut down.
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Old 01-31-2004, 10:04 PM
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I knew someone would start the old "what oil is better" arguement. Personally, I got 240,000 miles off a Bronco using good old dino Castrol GTX. I just switched my 6.0 from Delo 400 15-40 to Castrol HDL 15-40. If it meets CI-4, do whatever turns you on.
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Old 02-01-2004, 02:19 PM
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i used rotella in my 99 psd, and a 01 duramax, and had nothing but problems. in the ford, the oil got wipped up and the truck ran awful until i changed it. I will never run rotella again. I try to stick with valvoline.
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