what kind of oil should I use?

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I assume it is the newer cummins (6.7 IIRC)?

Id be looking for a good 5w-40 syn for your location.

Please tell us more. Duty cycle? Loads? typical drive, etc?

JMH
 
Where in Alberta?

It's the 5.9 Cummins but are there any upgrades to it like a chip or turbo.

Do you tow/haul a lot, what kind of service does it see, and how often is it serviced?
 
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I just love these questions.

I'll presume you're going to keep the vehicle a long time, thereby desiring significant duration in vehicle life cycle. You operate, because of your region, in some extreme temp environments, so a "synthetic" would help with cold pumping and evaporative issues in summer. Synthetics also help extend change intervals, if you're into that sort of thing, although 5000 km service intervals in no way would necessitate synthetic by any stretch. Another thing to consider is how many total km's you will accumulate in a year; a lot of km's with OCI's at 5km could be a lot of oil changes (= time and money).

"Best" is such a subjective word. I always believe you should first define the parameters and criteria you need to operate in, then "best" is what fills as many "pros" with as few "cons" as possible. Asking which is the "best" oil is akin to asking what is the "best" firearm caliber, or "best" tire, or audio system speaker, or TV set ... you get the picture. I don't know what I would call the "best" because there are other good selections too, and you'd have to decide based on performance, price and availability.

The 5.9 ISB runs pretty well on just about anything. But I do concur with Johnny; the P/C Duron is a fine product and would be a top contender for my dollar.
 
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We all know it's 9mm, Bridgestone, BOSE, and Sony.
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Sorry, I just could not resist. But I do concur with your analysis.
 
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Originally Posted By: Johnny
If I lived where you do it would be Petro-Canada Duron 5W-40. That is an excellent product.


X2- excellent choice.
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Originally Posted By: dnewton3
I just love these questions.

I'll presume you're going to keep the vehicle a long time, thereby desiring significant duration in vehicle life cycle. You operate, because of your region, in some extreme temp environments, so a "synthetic" would help with cold pumping and evaporative issues in summer. Synthetics also help extend change intervals, if you're into that sort of thing, although 5000 km service intervals in no way would necessitate synthetic by any stretch. Another thing to consider is how many total km's you will accumulate in a year; a lot of km's with OCI's at 5km could be a lot of oil changes (= time and money).

"Best" is such a subjective word. I always believe you should first define the parameters and criteria you need to operate in, then "best" is what fills as many "pros" with as few "cons" as possible. Asking which is the "best" oil is akin to asking what is the "best" firearm caliber, or "best" tire, or audio system speaker, or TV set ... you get the picture. I don't know what I would call the "best" because there are other good selections too, and you'd have to decide based on performance, price and availability.

The 5.9 ISB runs pretty well on just about anything. But I do concur with Johnny; the P/C Duron is a fine product and would be a top contender for my dollar.


Just interested to know if Duron is sold in the US- lot of users on this board from the US who rate Duron highly.
 
5000km? Isn't that like 3000 miles? That's waaayy to soon! Go at least 8500 km, with synthetic 1.5x longer. BTW, don't switch to synthetic until you break the engine in.
 
That's kind of what I was hinting at.

He could run out the OCI's to a much longer interval, and run the 5W-40 Duron. Or, run a 5000km OCI, and run whatever inexpensive farm/fleet HDEO he can find; at that low a mileage, any HDEO would hold up, and still have life left when dumped.

Again, "best" is the most pro's with the least con's. And "best" is different for nearly every person in a different situation. To me, the whole question of what's "best" is moot. The "best" advice we can give is to offer choices for certain scenarios, and let the OP pick which "best' fits his needs.

In my opinion, short OCI's + synthetic lubricants = wasted money! So a synthetic is NOT the best choice if you're going to OCI frequently. It's not cost effective. There are hundreds of UOA's here to show that good quality group II oils work fine.

Stretch out the OCI and the whole concept of "time is money" starts to make sense. It can be very effective to run premium lubes and filtration to long OCI's, especially if you're on the road a great deal. For some people, down time is expensive, perhaps resources are limited, and synthetics and BP filters make good fiscal sense.

Bottom line: beauty is in the eye of the beholder.
 
Duron can be had in the US but it is hard to get, you can generally only get it from Petro-Canada distributors and they are pretty few and far between. Online, I managed to find one in Ohio, but no others.
 
I would recommend Petro Canada Duron E 0W-40.It has the lowest pour point of any motor made that I know of -66 C.Its only $25/4litre.It worked great in Ft.Mac where it was -45 C one morning.
 
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