Oil change intervals…which manual do I believe?

[gram10]

From what I understand the manufacturer ratings is that manufacturers come up with their own specific tests for the oil and oil manufacturers have to pass the test and PAY to have the rating put on the bottle. So, personally, I think k any quality oil would be fine with the sp rating, ,just not sure how not using an oil with the ms rating would affect warranty. I always used liquimoly in my bmw and wanted to use it for this truck, but they don't have the chrysler rating on the 0w40

 

[RHOfan]

From what I understand the manufacturer ratings is that manufacturers come up with their own specific tests for the oil and oil manufacturers have to pass the test and PAY to have the rating put on the bottle. So, personally, I think k any quality oil would be fine with the sp rating, ,just not sure how not using an oil with the ms rating would affect warranty. I always used liquimoly in my bmw and wanted to use it for this truck, but they don't have the chrysler rating on the 0w40

According to ChatGPT, MS is the more important rating, as it proves the oil meets ALL the specific requirements set by the engineers of that engine.

Interesting…did not know the oil maker has to pay the engine manufacturer to use the MS, but it makes sense if the engine manufacturer has to spend time testing their product.

I’m sticking with the oil(s) that includes the specified MS. Why? I’ve read in a couple places that intake coking can be made worse with the wrong oil. Makes sense, since the coking is caused by oil fumes & vapors in DI engines.

Why risk it? Brand loyalty? Frankly, once the oil is poured out of the bottle, it all looks the same to me (except maybe Royal Purple).

 

[RHOfan]

But, back to the original point of this post…which manual is correct? They both apply to multiple Ram 1500 trim levels. They both lack information needed to maintain our RHOs (namely our transfer case is not mentioned). What else is missing?

The folks who go above & beyond in caring for their vehicles are probably safe, but guessing they are the extreme minority of owners. Do the dealers know about this maximum 6000mi/6mo limit for oil changes on RHO? And, is that possibly outdated guidance that has been corrected in the printed manuals that came with our trucks?

 

[tchokaeewe]

But, back to the original point of this post…which manual is correct? They both apply to multiple Ram 1500 trim levels. They both lack information needed to maintain our RHOs (namely our transfer case is not mentioned). What else is missing?

The folks who go above & beyond in caring for their vehicles are probably safe, but guessing they are the extreme minority of owners. Do the dealers know about this maximum 6000mi/6mo limit for oil changes on RHO? And, is that possibly outdated guidance that has been corrected in the printed manuals that came with our trucks?

I’d go with the longer and more complete manual that’s online. It seems like more modern vehicles come with a short summary manual printed and then have a full version online. That’s how my wife’s Expedition is. The full, digital version has specific notes for each trim and/or engine.

I’ll defer to those with experience talking to the dealers about their RHO and whether the service department knows the oil change intervals. I highly doubt that 6k miles/6 months is outdated as this truck has only been out for a matter of months and this is a high performance motor. I’d expect that oil change interval.

 

[tchokaeewe]

From what I understand the manufacturer ratings is that manufacturers come up with their own specific tests for the oil and oil manufacturers have to pass the test and PAY to have the rating put on the bottle. So, personally, I think k any quality oil would be fine with the sp rating, ,just not sure how not using an oil with the ms rating would affect warranty. I always used liquimoly in my bmw and wanted to use it for this truck, but they don't have the chrysler rating on the 0w40

Probably better to go with the oil that has both API-SP & MS but you’ll still be within warranty if it’s only API-SP or API-SN+.

 

[RHOfan]

I’d go with the longer and more complete manual that’s online. It seems like more modern vehicles come with a short summary manual printed and then have a full version online. That’s how my wife’s Expedition is. The full, digital version has specific notes for each trim and/or engine.

I’ll defer to those with experience talking to the dealers about their RHO and whether the service department knows the oil change intervals. I highly doubt that 6k miles/6 months is outdated as this truck has only been out for a matter of months and this is a high performance motor. I’d expect that oil change interval.

Totally agree with that logic.

 

[MurphNH]

I have had great luck with Pennzoil Ultra Platinum. That is what they put in at the factory from what I have read also. The only issue is I normally buy 0w-20 that comes in 5qt jug and 0w-40 is sold by the quart so it ends up being 1/3 more expensive.

Exceeds the requirements of the following industry and OEl specifications:

• API SP-Resource Conserving and all previous Categories

• Chrysler MS-A0921

To find the right Pennzoil" product for your vehicles and equipment, please consult www.pennzoil.com to look up the right motor oil recommendation using our oil selector.

 

[RHOfan]

I have had great luck with Pennzoil Ultra Platinum. That is what they put in at the factory from what I have read also. The only issue is I normally buy 0w-20 that comes in 5qt jug and 0w-40 is sold by the quart so it ends up being 1/3 more expensive.

I bought on Amazon in a 6pk box. Worked out to $8/bottle, which is substantially lower than MSRP.

 

[MurphNH]

I bought on Amazon in a 6pk box. Worked out to $8/bottle, which is substantially lower than MSRP.

Walmart is right at 8 plus or minus a few cents also. Dealer oil changes will be $$$$