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Newer Fluids/filters maintenance stuff than the 1992 numbers?

February 21, 2019, 05:57:06 pm

Hello again!
Question is we have the manuals for the Cummings 5.9 Turbo but the oil/antifreeze/etc. Is from 1992. Any better one now? It has been 27 years.Best oil? Filters?

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Re: Newer Fluids/filters maintenance stuff than the 1992 numbers?

Reply #1 – February 21, 2019, 07:22:31 pm

You might ask Cummins. If you have Cummins part numbers from 1992 there should be cross-references to the new numbers if there has been any change since then.

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Re: Newer Fluids/filters maintenance stuff than the 1992 numbers?

Reply #2 – February 21, 2019, 07:36:19 pm

I do have a email into them but I would like to hear from real world experience as well.

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Reply #3 – February 21, 2019, 07:56:33 pm

We still run Delo, as every owner has since new. The only fluid changes I know about are the switch to Allison "Transynd' and, for the CAT, a newer coolant. 

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Reply #4 – February 21, 2019, 08:47:56 pm

For engine oil, there are two very good ones-- both available at Walmart, etc.

Shell Rotella T 15-40
Delo 400 15-40

Can't go wrong with either.

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Reply #5 – February 21, 2019, 09:20:33 pm

Recommend ELC (extended life coolant) for the cooling system.  There are several brands and I don't know if one is better than another.  With the ELC, you wont need the filter ass'y that adds chemical adjustment to the coolant, you just put in a blank element that I'm sure is available from any auto parts store.  Have a great day  ----  Fritz

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Reply #6 – February 22, 2019, 11:22:24 am

Here's what we use, I'd think there are other brands, like Fritz says:

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Reply #7 – February 22, 2019, 11:59:51 am

Shell Rotella T 15-40 is what I use on the motorcycles now so thats good. I can use the Cat stuff in a Cummins engine? Stick with the Cummins oil/air filters? Anything new in the air dryer department?

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Reply #8 – February 22, 2019, 12:03:44 pm

Not sure what you mean by "Cat Stuff". 

As far as air dryers, you can overhaul the one you have (though less $$ to buy a factory reman) or replace with a newer generation from the same company that is easier to service.  Verify that hose connections are the same.

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Reply #9 – February 22, 2019, 01:31:26 pm

Cat stuff is the antifreeze

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Reply #10 – February 22, 2019, 01:43:01 pm

Cummins publishes mil-specs for coolant.

I would be very surprised if they are any different from the specs at Caterpillar.

But,. to be safe, compare Cummins specs to those on the Cat coolant jug.

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Reply #11 – February 22, 2019, 05:00:01 pm

It was a hard question as every engine maker has their own formula for what they make the blocks out of and anti-freeze can corrode faster in some than others. Like Chrysler used more nickel in the cars sold in Canada/motorhomes and the 440 sixpack due to heat/cold.

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