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Old Blue

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Posted: 01/14/20 11:38am Link  |  Quote  |  Print  |  Notify Moderator

2007 Holiday Rambler with a 325 cummins engine, what type antifreeze should I use in the radiator? Pulled some out of the overflow container and it seemed to be a green color. This antifreeze has never been changed.
Thanks
Bill


Bill
36 Holiday Rambler
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Yosemite Sam1

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Posted: 01/14/20 12:19pm Link  |  Quote  |  Print  |  Notify Moderator

Drain the overflow tub and the radiator and replace it with regular anti freeze from Walmart.

Or have Walmart do it for you.

wolfe10

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Posted: 01/14/20 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

Yosemite Sam1 wrote:

Drain the overflow tub and the radiator and replace it with regular anti freeze from Walmart.

Or have Walmart do it for you.


If this is the Cummins ISC engine, that is very bad advice. Even for the B, it is not what Cummins recommends.

Read coolant specs in your Cummins manual or your chassis manual.

There are basically two kinds of approved coolants for diesels:

1. Low silicate for diesel with added SCA (Supplemental Coolant Additive)

2. The new generation long life coolants for diesels.

With a Cummins, I would sure look at the Fleetguard coolants, as that is Cummins in-house brand. If you ever need work at a Cummins shop, they will have the same coolant as you are using.


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Yosemite Sam1

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Posted: 01/14/20 01:14pm Link  |  Quote  |  Print  |  Notify Moderator

wolfe10 wrote:

Yosemite Sam1 wrote:

Drain the overflow tub and the radiator and replace it with regular anti freeze from Walmart.

Or have Walmart do it for you.


If this is the Cummins ISC engine, that is very bad advice. Even for the B, it is not what Cummins recommends.

Read coolant specs in your Cummins manual or your chassis manual.

There are basically two kinds of approved coolants for diesels:

1. Low silicate for diesel with added SCA (Supplemental Coolant Additive)

2. The new generation long life coolants for diesels.

With a Cummins, I would sure look at the Fleetguard coolants, as that is Cummins in-house brand. If you ever need work at a Cummins shop, they will have the same coolant as you are using.


Sorry, I should have concluded that it's a diesel with the Cummins engine.

Blaster Man

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Posted: 01/14/20 03:00pm Link  |  Quote  |  Print  |  Notify Moderator

As noted above, you need coolant for a diesel, not a gasser.


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gbopp

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Posted: 01/14/20 03:58pm Link  |  Quote  |  Print  |  Notify Moderator

Yosemite Sam1 wrote:

Or have Walmart do it for you.

That's just scary.

Lwiddis

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Posted: 01/14/20 04:55pm Link  |  Quote  |  Print  |  Notify Moderator

I recommend following the advice from Cummins.


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Ranger Smith

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Posted: 01/15/20 03:06am Link  |  Quote  |  Print  |  Notify Moderator

Yosemite Sam1 wrote:

Drain the overflow tub and the radiator and replace it with regular anti freeze from Walmart.

Or have Walmart do it for you.


Not on my worst day.

You have either a Fleet Guard fully formulated which has the SCA's in it or you have an OAT coolant depending on the year of your rig. A call to Freightliner can tell you which they put in when built.


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wa8yxm

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Posted: 01/15/20 05:04am Link  |  Quote  |  Print  |  Notify Moderator

Note that the quoted text below applies to ALL engines with only a name change:

"Read coolant specs in your Cummins manual or your chassis manual."

This is always the best advice. be it a Cummins, Cat, Detroit Diesel or Chevy or Ford gasser.. Read the manual. NO manual visit the factory store (A Cummins dealer in this case)

The different colors tend to Suggest (not dictate) a type of anti-freeze. Some of them do not mix well with others. Some can cuase real issues if they are put in the wrong engine.

Chevy for a time used a special "Lifetime" coolant on their engines. (I do not know the color)

But you want to stick with the same type the factory put in if you can.
NOTE: you need not buy it at the Cummins shop but find out what kind it is there.


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Posted: 01/15/20 05:29am Link  |  Quote  |  Print  |  Notify Moderator

X2 on being very careful on getting the correct coolant. My 2014 ctd pickup uses OAT which looks orange in the reservoir yet is actually purple. The CTD SUPPLEMENT warns of engine damage if the wrong coolant is used. Every auto parts store will try to sell me the wrong thing, only the dealer has had the correct stuff so far.

I would never listen to Walmart and auto parts stores

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