Oil Deal!!!

[gsbrockman]

My 15 book says the same. So how many live in 0 and above and use the 5-40. Doesn’t make much sense to me to run 5-40 0 and above but for some reason it appears many do.

I think most people would plug in heater in teens to single digit and below. With spec I showed having only three degrees difference in pour point personally think 15-40 is a more recommended choice.

Some of y’all aren’t good understanding the CHART that is in the manual. Look closely at the picture....
#ad

 

[AH64ID]

My 15 book says the same. So how many live in 0 and above and use the 5-40. Doesn’t make much sense to me to run 5-40 0 and above but for some reason it appears many do.

I think most people would plug in heater in teens to single digit and below. With spec I showed having only three degrees difference in pour point personally think 15-40 is a more recommended choice.

3°C... but this isn't Celsius land.... 5° in American.

Some of y’all aren’t good understanding the CHART that is in the manual. Look closely at the picture....
#ad

Yep, it's just fine at all temps.

There are advantages to each oil, and for me a 15w-40 synthetic has the most advantages. It won't be that way for everyone, so as long as you're running something based on that chart you're good.

I know that Cummins allows certain 5w-30 and 10w-30 oils for use, specifically if they have the appropriate HT/HS rating. I can tell you that it's not a good idea. You will not notice any increase in economy but you will notice an increase in wear.

 

[kthaxton]

My book for the '18 2500 says that 15/40 is recommended for 0°F and above. For colder temps, it specifically recommends "5/40 synthetic".

As shown in the chart brockman posted, synthetic 5w40 works in all of those conditions. I think the intent behind "recommending" conventional 15w40 in warmer temps is because it is adequate and cheaper than synthetic 5w40.

 

[kthaxton]

I chimed in this discussion because when discussing Rotella T6 5W40 being on sale, Cummins12V98 said "but is it worth it?", implying that there was some realistic reason to avoid it, which there is not. This isn't the first time this exact discussion has taken place, nor is it the first time that brockman has had to post the chart showing that 5w40 is fine in ALL conditions. With the ease of access (WalMart) and the low price, 5w40 T6 is VERY WELL WORTH IT, even when it is not on sale.

If you feel your personal oil choice is superior and it gives you a warm fuzzy for using it, that is fine, but when you (baselessly) imply that another oil, that is RECOMMENDED BY THE MANUFACTURER, should be avoided, you've gone too far.

I swear, oil is like religion to some folks.

 

[Cummins12V98]

My manual CLEARLY states “in ambient temperatures above 0 F we recommend you use 15W-40 engine oil”. Then it goes on to tell you below 0 F 5W-40 SYNTHETIC.

 

[Cummins12V98]

3°C... but this isn't Celsius land.... 5° in American.



Yep, it's just fine at all temps.

There are advantages to each oil, and for me a 15w-40 synthetic has the most advantages. It won't be that way for everyone, so as long as you're running something based on that chart you're good.

I know that Cummins allows certain 5w-30 and 10w-30 oils for use, specifically if they have the appropriate HT/HS rating. I can tell you that it's not a good idea. You will not notice any increase in economy but you will notice an increase in wear.

Yes. -40F and -45 C. Don’t think it really matters much if it’s synthetic.

Why would they recommend 15-40 Dino 0F and above over 5-40 synthetic.

There is no chart in my manual as shown.

 

[gsbrockman]

There is no chart in my manual as shown.

Looky at page 283 of this 2015 MY Diesel Supplement....

http://www.fcacanada.ca/owners/en/manuals/2015/2015E-RAM_15_25_35_45_55-Diesel-SU-4th_R1.pdf

 

[kthaxton]

My manual CLEARLY states “in ambient temperatures above 0 F we recommend you use 15W-40 engine oil”. Then it goes on to tell you below 0 F 5W-40 SYNTHETIC.

I've already stated my suspicions why they say that. You have read on this forum (for many years now) what oil the engine's ship with, right? Do you also believe there is some superiority of a conventional 15w40 vs. a synthetic? Again, I am betting they recommend conventional 15w40 only because it is adequate, and cheaper.

 

[gtwitch]

I have used T6 15W40 for over 15yearsin my 99 CTD with what I feel are great results and at 240K, it will use 2 qts in 10k mile change interval of 60% towing. I am about to change the oil in my "new to me " 2016 6.7 and it will get the 15W40 also. If it works, don't screw with it!
gtwitch in wyoming

 

[gsbrockman]

I have used T6 15W40 for over 15yearsin my 99 CTD

That can’t be......T6 15W40 hasn’t been out much over 6 months.

 

[Cummins12V98]

Looky at page 283 of this 2015 MY Diesel Supplement....

http://www.fcacanada.ca/owners/en/manuals/2015/2015E-RAM_15_25_35_45_55-Diesel-SU-4th_R1.pdf

Why are you quoting a Canadian publication?

Bottom line "MY" manual only shows the below. Maybe it's the LongHorn spec???

Below they are specifying the SAME spec for both and then specifically saying SYNTHETIC for the extreme cold applications.

I don't care what anyone else uses I am just discussing what "MY" manual states in WORDS.

I am not guessing what they are saying by looking at the chart.

Does anyone really think -40 or -45 pour point will make a difference to anyone on here?

 

[Cummins12V98]

That can’t be......T6 15W40 hasn’t been out much over 6 months.

He gots the experimental stuff!

 

[Cummins12V98]

They are mentioning this spec as part of the 15-40 verbiage in pic above.

"Valvoline Premium Blue Extreme Full Synthetic Engine Oil is exclusively endorsed and recommended by Cummins, meeting API CJ-4 specifications, including Cummins CES 20081."

 

[kthaxton]

Why are you quoting a Canadian publication?

Bottom line "MY" manual only shows the below. Maybe it's the LongHorn spec???

Looks like I will have to pull my 2015 manual out and show you.

I don't care what anyone else uses I am just discussing what "MY" manual states in WORDS.

It kinda seems like you care, because you always bring it up and try to sway people.

I am not guessing what they are saying by looking at the chart.

No guessing required for the chart, the statement appears to need to be taken with a grain of salt. It doesn't explain WHY they recommend it, however the chart shows that 5w40 works in all environments...so if you want to be covered all year, without question, use 5w40.

Does anyone really think -40 or -45 pour point will make a difference to anyone?

It is really irrelevant to the discussion. You are touting the synthetic 15w40 that you use, the manual has a recommendation for a Conventional 15w40 which you are using to support your argument. The oil you use and what the manual "recommends" are not the same thing.

There is NO logical reason to sway people away from 5w40 T6, especially for its price and availability.

 

[gsbrockman]

Thanks for the rebuttal, @kthaxton
Could not have said it better myself....

In any event....it costs me maybe an additional $22/oil change for the 5W40 synthetic vs 15W40 non-synthetic. I run it year round.

When my phone rings......I may be going to central FL or I may be going to WI, MI, MO, NE, NY, etc. Either way....White Lightning has oil in the crankcase that is correctly tasked for ANY climate I may encounter.

 

[Cummins12V98]

NOT trying to convince anyone of anything. I am just showing in WORDS what they say.

I think many here never see below the magical "0" number and run the 5-40 when 15-40 SYNTHETIC is available and in words CUMMINS says is preferred.

I am waiting for your pic but the fact I have written specifics IMHO are much more meaningful.

PLEASE show where I have tried to sway anyone. Giving info is what I thought we are all about?????

The 15-40 "IS" relevant as the spec I showed that you did NOT comment on mentions SYNTHETIC 15-40 CES 20081.

I am "touting" the 15-40 and so is CUMMINS! CES 20081

Greg what's the LOWEST ambient temps you have ever been on a "COLD" start in your business?

 

[gsbrockman]

I think many here never see below the magical "0" number and run the 5-40 when 15-40 SYNTHETIC is available and in words CUMMINS says is preferred.

Greg what's the LOWEST ambient temps you have ever been on a "COLD" start in your business?

There ya go thinking again......
I pray these pictures will reiterate what I have been trying to get across......

Laramie and Cheyenne, WY March 3rd and 4th 2019. I was running an expedited run (horse trailer) from....GET THIS.....Dade City, FL to Salt Lake City, UT.

The -12*F was when I finished my 10 hour break at my motel and went to fire up my truck.

 

[mfurrh55]

Man...give it a rest

 

[Ozymandias]

Oil battle, oil battle, oil battle..

 

[kthaxton]

My 2015 manual.. which is very likely identical to your 2015 manual.