Engine Oil enquiry based on the region where i live

[Lootawi]

I don't know if I'm supposed to open a new thread here as I'm a new member or somewhere else.

I Live in Dubai and the Temperatures here all year vary around 15-50 Celsius which is 59-122 Fahrenheit depends on the season, and our dealers do not bring the Cummins Engines on the RAM, it may only come with the 6.4 Gas engine talking about both 2500/3500 chassis.

Anyways long story short! I brought my 2020 RAM 3500 Cummins 6.7L HO from Canada, with 670km/ 1072 miles only on the ODO meter, fairly new and I need to change the oil and oil filter before using the car, and I'm really confused what engine oil shall I use for it, that would probably suite the weather here in the region, and should I change the engine oil that came from the factory now ? as the temps are getting high as we are entering summer, or I shall follow the manual and change only at 24k kilometer/15k miles as my first oil change?

appreciate your help guys, and thank you in advance.

 

[CdnHO]

I like to change my first oil change early. After that I go by annually as required by the maintenance schedule as that is around 12 kilometers annually. At those temps I would use the Rotella 10W30 as recommended by Chrysler. I do use 5W40 T6 full synthetic all year but don't experience the same temps you do.

 

[Papa Red]

Welcome to the forum.

Red

 

[Crusty old shellback]

Welcome. Been to Dubai a few times in the '80s and '90s when I was in the Navy.
Since it never gets down to freezing, but can get really hot. Maybe something like a 20w40 would work. 10w40 would be the lowest I'd go and still may be a bit thin for your low temps that are well above freezing.

 

[RVTRKN]

Its my preference to change the oil every 5K miles. I don't trust the 15K mile interval per Ram. Because of the recent miles I traveled within a month time, (7K miles) and no time for the oil change, I changed it at 7K miles. Living in Dubai, the time interval requirement, if the milage is lower than 15K in 12 months, is not as critical if you follow 15K/12 month recommendation. The reason is the dry climate, oil is hydrostatic (ability to absorb moisture) and the recommendation is just a general rule averaged out over many different climate zones., so the dry Dubai climate isn't necessarily required.

Living in Las Vegas Nevada is close to Dubai's climate, hot and dry, so I never worried about time intervals for any engine I owned. Now that I moved to Kentucky, I'll have to follow the time interval if I don't drive over 5K miles in 12 months.

Welcome to the Forum.

 

[H3LZSN1P3R]

Go the 24k km it says thats perfect unless you go to an oil bypass filter setup then you can go much longer… we ran one truck to 80,000 km every 20k we did oil analysis and it was still good to go but at 80k we would dump and refill. The truck had 1.8 million on the ODO last time i saw it and its still running the roads original engine

Diesel 10W30 is the cummins recomended oil for your climate and dont change it every 12 months thats just a load of crap ram puts in the book but it is proven to be irrelevant

 

[CdnHO]

Go the 24k km it says thats perfect unless you go to an oil bypass filter setup then you can go much longer… we ran one truck to 80,000 km every 20k we did oil analysis and it was still good to go but at 80k we would dump and refill. The truck had 1.8 million on the ODO last time i saw it and its still running the roads original engine

Diesel 10W30 is the cummins recomended oil for your climate and dont change it every 12 months thats just a load of crap ram puts in the book but it is proven to be irrelevant

The only reason I change it every 12 months is because the maintenance schedule requires it. I changed oil in my Honda Accord V6 annually until the warranty ran out. Now every two years as she doesn't put many miles on it. I do my own maintenance on both vehicles.

 

[Lootawi]

I like to change my first oil change early. After that I go by annually as required by the maintenance schedule as that is around 12 kilometers annually. At those temps I would use the Rotella 10W30 as recommended by Chrysler. I do use 5W40 T6 full synthetic all year but don't experience the same temps you do.

and the Rotella would probably be the T5 as Synthetic blend of 10w-30, because i only found a 15w-40 T6 or a 5w-40.

 

[Lootawi]

Welcome to the forum.

Red

thank you


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[Lootawi]

Welcome. Been to Dubai a few times in the '80s and '90s when I was in the Navy.
Since it never gets down to freezing, but can get really hot. Maybe something like a 20w40 would work. 10w40 would be the lowest I'd go and still may be a bit thin for your low temps that are well above freezing.

thanks for the advise


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[Lootawi]

Its my preference to change the oil every 5K miles. I don't trust the 15K mile interval per Ram. Because of the recent miles I traveled within a month time, (7K miles) and no time for the oil change, I changed it at 7K miles. Living in Dubai, the time interval requirement, if the milage is lower than 15K in 12 months, is not as critical if you follow 15K/12 month recommendation. The reason is the dry climate, oil is hydrostatic (ability to absorb moisture) and the recommendation is just a general rule averaged out over many different climate zones., so the dry Dubai climate isn't necessarily required.

Living in Las Vegas Nevada is close to Dubai's climate, hot and dry, so I never worried about time intervals for any engine I owned. Now that I moved to Kentucky, I'll have to follow the time interval if I don't drive over 5K miles in 12 months.

Welcome to the Forum.

thanks, i was considering tbh every 7k miles change unlike the manual, just to keep the engine running smooth, and sometimes Dubai gets humid, and i mean really humid


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[Brutal_HO]

Welcome. Been to Dubai a few times in the '80s and '90s when I was in the Navy.
Since it never gets down to freezing, but can get really hot. Maybe something like a 20w40 would work. 10w40 would be the lowest I'd go and still may be a bit thin for your low temps that are well above freezing.

Please don't recommend the wrong oil for Cummins engines.

and the Rotella would probably be the T5 as Synthetic blend of 10w-30, because i only found a 15w-40 T6 or a 5w-40.

There are only two oils recommended for use in the 2019+ Cummins engines. DO NOT RUN 10W-40, 15W-40, or heavier oils, it will coke up the hydraulic lifters.

https://static.nhtsa.gov/odi/tsbs/2020/MC-10178698-9999.pdf

10W-30 CK4 spec oil any blend, Semi-synth or full synth recommended for extended oil change intervals (my words)
5W-40 CK4 Spec Full Synthetic.

Use the T6 5W-40.

 

[Lootawi]

Please don't recommend the wrong oil for Cummins engines.



There are only two oils recommended for use in the 2019+ Cummins engines. DO NOT RUN 10W-40, 15W-40, or heavier oils, it will coke up the hydraulic lifters.

https://static.nhtsa.gov/odi/tsbs/2020/MC-10178698-9999.pdf

10W-30 CK4 spec oil any blend, Semi-synth or full synth recommended for extended oil change intervals (my words)
5W-40 CK4 Spec Full Synthetic.

Use the T6 5W-40.


View attachment 38817

Well noted, Thank you

 

[Crusty old shellback]

HMM. That doesn't make much sense.

The lower number, i.e. of 10w or 5W is the viscosity of the oil at the colder temps. So if the temps never get near freezing, why would a 15W oil cause problems?

The higher number is the viscosity at the higher temps, so with 100+ degree temps most of the year, even in the middle of the night, why would you not want a oil that is made to run at the higher temps?

I understand that is what FCA put in there manual. But as the OP stated, they do not sell their trucks in Dubai, so would these oil recommendations really apply in that extreme environment?

 

[Nick]

and the Rotella would probably be the T5 as Synthetic blend of 10w-30, because i only found a 15w-40 T6 or a 5w-40.

Don't run 15 /40 in your truck ! When Cummins revamped their engines the internal tolerance became much tighter. Run either 10/30 or 5/40 as far as the change interval that is put by Cummins not Ram it is based on thousands of hrs of testing those engines for wear and the oils contamination factors. If you idle for long periods you can turn on the cruise and it will bump up the rpm between 1and 11 hundred rpms . Helps minimize cylinder wash .

 

[Lootawi]

Don't run 15 /40 in your truck ! When Cummins revamped their engines the internal tolerance became much tighter. Run either 10/30 or 5/40 as far as the change interval that is put by Cummins not Ram it is based on thousands of hrs of testing those engines for wear and the oils contamination factors. If you idle for long periods you can turn on the cruise and it will bump up the rpm between 1and 11 hundred rpms . Helps minimize cylinder wash .

interesting, thanks for the info

 

[Lootawi]

HMM. That doesn't make much sense.

The lower number, i.e. of 10w or 5W is the viscosity of the oil at the colder temps. So if the temps never get near freezing, why would a 15W oil cause problems?

The higher number is the viscosity at the higher temps, so with 100+ degree temps most of the year, even in the middle of the night, why would you not want a oil that is made to run at the higher temps?

I understand that is what FCA put in there manual. But as the OP stated, they do not sell their trucks in Dubai, so would these oil recommendations really apply in that extreme environment?

and i even told them at the dealer i would pay upfront to order me a Cummins RAM from the factory and i will wait, they unfortunately denied, and i believe the reason is that they don't have trained technicians on the diesel trucks here ! only gas, although if they did order me one rhis would be my 4th RAM through them‍ anyways i got it myself

 

[Brutal_HO]

HMM. That doesn't make much sense.

The lower number, i.e. of 10w or 5W is the viscosity of the oil at the colder temps. So if the temps never get near freezing, why would a 15W oil cause problems?

The higher number is the viscosity at the higher temps, so with 100+ degree temps most of the year, even in the middle of the night, why would you not want a oil that is made to run at the higher temps?

I understand that is what FCA put in there manual. But as the OP stated, they do not sell their trucks in Dubai, so would these oil recommendations really apply in that extreme environment?

It's the additives used to lower the viscosity when cold. Makes perfect sense.

DO NOT RUN 15W-40 oil in CGI (hydraulic lifter) Cummins engines.

The only oil approved for use is CK4 10W-30 or CK4 full synthetic 5W-40.

Nothing more to be said.

 

[RVTRKN]

Back in the 70's, when I was a teen, I would disassemble engines that were to be rebuilt, for the owner of the shop. A 327 had sludge so bad built up over the lifters you could barely them when I removed the valve covers. He explained to me that was from running non detergent oil and longer oil change intervals. I remember that, every time I think about extending the oil change on engines. Our Toyota Highlander is every 10K miles, and I still do 5K intervals.

What happened to the standard 3K mile Heavy Duty, and 5K mile Light Duty cycles, engine oil change intervals?

 

[Brutal_HO]

Back in the 70's, when I was a teen, I would disassemble engines that were to be rebuilt, for the owner of the shop. A 327 had sludge so bad built up over the lifters you could barely them when I removed the valve covers. He explained to me that was from running non detergent oil and longer oil change intervals. I remember that, every time I think about extending the oil change on engines. Our Toyota Highlander is every 10K miles, and I still do 5K intervals.

What happened to the standard 3K mile Heavy Duty, and 5K mile Light Duty cycles, engine oil change intervals?

Improved oils and materials.

If in doubt, do oil analysis.