Oil for my 6.7 Powerstroke

[Donald]

Originally Posted By: UltrafanUK
Ahh! Don't think that extending an OCI or ignoring an OLM warning is OK just because you are using a better oil. If your vehicle is out of warranty the only safe way to extend the OCI is with a used oil analysis series.
Contamination of the oil effects a full synthetic just as badly as a conventional base oil and they only last longer if you have an engine that causes high temp shearing. Most of those engines have a hot running turbo or have high reline RPM limits.

PS: There are quite a number of 0w30 oils that are OK in a diesel car, including Edge and Ultra.


I have done a used oil analysis on the Motorcraft 10W30 and the oil was good when dumped. So the T6 synthetic should provide even better oil performance.

 

[Donald]

Originally Posted By: roadrunner1
Why not just stay with 10w30 as you have already proven through UOA that it did an outstanding job? In my 6.7 I run 10w30 year round and through UOA data it has shown to be more than suitable for my usage. Currently my truck is at just a couple miles short of 10,000 mi. on this run and just got "change oil soon" message.

I know there is a buffer built into the IOLM, but I have never considered extending a OC. Just because you are spending more money on a synthetic don't think you can extend it any farther than on conventional, those words are in your owners manual.


I believe in upstate NY if we have a cold snap I could need a block heater using 10W30 according to the owners manual.

The thinking is the oil will not provide proper lubrication without a block heater even it it starts.

I would need a 5W or 0W in the dead of winter.

 

[Ramblejam]

Donald,

You're stuck in the mindset of the 'ol Dodge you had; these new 6.7L trucks start-up just about like a gas engine. In other words, stop fretting so much and just enjoy the [censored] thing.

 

[roadrunner1]

Cold-flow properties of 10w30 and 5w-40 are nearly identical, I know it doesn't seem plausible but its a fact. The W isn't linear from a 40 wt to a 30 wt to a 20 wt and so on. Where you are located you see the possibility of colder weather than me, but I do travel into the UP of MI during the winter and can see temps just as cold as you. I have never had an issue starting cold with 10w30 in my 6.7 or my previous two 6.0's. If you have 110 available where you are going to have a cold-soak at -20f or colder oil choice is that much less of a concern.

The "synthetic is better" myth has never been seen by me in any UOA data in a diesel engine as the additive packages seem to control everything that they're supposed to in a CJ-4 spec lube. I do agree that there are some that do the job longer than others, but that has more to do with the additive package than syn vs conventional.

 

[UNC151]

Originally Posted By: Ramblejam
I'm in Kentucky, so obviously there's no demand for it to be on the shelf collecting dust. It can however be sourced through the local Chevron marketer (that covers WV and KY).
I have been in CO, WY, and MT in the winter and I have never seen it. One could order it from a distributor, but (to me) it makes more sense to simply grab 5W-40 from a local Walmart or equivalent.

 

[Donald]

I would like to get to -20F. Below that my own cold flow properties are not that good at age 63.

 

[Donald]

Originally Posted By: Ramblejam
Donald,

You're stuck in the mindset of the 'ol Dodge you had; these new 6.7L trucks start-up just about like a gas engine. In other words, stop fretting so much and just enjoy the [censored] thing.



The fleet is better now with all 2015/2016 vehicles.

Maybe now time for my Bombardier SW48 Snowcat.

 

[Powerstroke]

Originally Posted By: Farmer
You can get Delo 5w30 that's CJ4/SN. But it costs a lot. Do you have access to locally made lubricants? We have Klondike here and they make a 0W-40.


It's not that expensive $71.57/3 gallons on Amazon, less than $24/gallon. Outstanding oil with similar pricing as T6 and Cheaper than Delvac 5w40 or Mobil 1 Turbo Diesel Truck.

https://www.amazon.com/Delo-271210339-3P...hetic+motor+oil

 

[CT8]

Originally Posted By: Donald
I would like to get to -20F. Below that my own cold flow properties are not that good at age 63.
I am 63 and none of my properties are that that good.

 

[UNC054]

Friend of mine has a 2016 6.7PSD and runs 5w40 Rotella T6 year round, I have a 6.7 Cummins and run 5w40 Mobil Delvac 1 all year without issue. You'll be fine with 5w40.

 

[ToadU]

Fuel mileage and the 6.7 are not congruent. In my fleet the 6.7s F450/550 average 6.5mpg. I am replacing all of them with the gas v-10. My cost per mile to operate is substantially less by almost half.

Good luck.

 

[another Todd]

Originally Posted By: ToadU
Fuel mileage and the 6.7 are not congruent. In my fleet the 6.7s F450/550 average 6.5mpg. I am replacing all of them with the gas v-10. My cost per mile to operate is substantially less by almost half.

Good luck.


It would be nice to know how your fleet is operated. I get 11.5+ mpg towing a 10K lb 5th wheel trailer with my 2015 6.7 F250. My friend has a V-10 and cannot keep up on hills AND gets worse fuel mileage everywhere.

 

[BrianF]

I surmise where the savings are had are in the smaller amount of oil required for changes, no fuel filters, no DEF and no extra fuel needed for the regen. That and the diesel engine premium on purchase is a tough pill to swallow.

I am looking for a new HD pickup and checking out the big 3 and leaning towards a diesel. Lots to think about with this.

 

[TiredTrucker]

Originally Posted By: ToadU
Fuel mileage and the 6.7 are not congruent. In my fleet the 6.7s F450/550 average 6.5mpg. I am replacing all of them with the gas v-10. My cost per mile to operate is substantially less by almost half.

Good luck.


Wow, that is pretty bad. My semi truck yanking around up to 46,000 lb of freight (average payload is about 35,000) on a 32,500 lb truck with a 13L engine has averaged 7.93 mpg over the last 641,000 miles. Either there is some serious design problems with your F450/550's or someone is just plain not operating them right.

 

[DoubleWasp]

If I recall correctly, his problem was that the extended idling and excessive regens were slaughtering him.