noon1148

Indiana

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Joined: 10/17/2009

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Good Sam RV Club
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Brought this 1998 HR Endeavor rear engine 275 HP Cummins and I want to change the antifreeze becuse I want to change several hoses before they give any problems on the road.
I am trying to find from Freightliner an estimate on the amount of antifreeze to buy. They have not been that helpful.
So I thought I would just post a topic and see if someone could give me an estimate. I plan on catching my old antifreeze and measure the amount but I just wanted to have the new antifreeze so I could complete the job on a weekend.
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Golden_HVAC

Fulltime, CA, USA

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Joined: 08/19/2003

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Hi,
If you are going to buy the pure anti-freeze, I would get 6 gallons and be ready to mix it with 6- 8 more gallons of distilled water. Then you will be ready in case you drain out up to 14 gallons.
Some water might not come out of the block. You can always return the un-used gallon or two of anti-freeze.
The reason I use distilled water is it wants to remove rust and other minerals from the radiator or block, and will suspend the minerals in the anti-freeze mixture, not letting as much settle to the bottom.
I have also used a Napa water filter since my engine was new. It is part number #4070. It is a requirement for 2 stroke diesels, but only optional protection on 4 stroke engines. Mine is gas, and I did not change any hoses or anti-freeze until the engine was 10 years old, then replaced the hoses and anti-freeze. The water filters come with supplemental coolant additives, and they tend to lubricate the rubber from the inside, so I was not worried about the hoses, or water pump seal.
Part # 4019 is used to install the water filter into a heater hose. I mounted mine in a location that is just behind the bumper, so I can put a 5 gallon bucket under the filter housing when I change the filter each year. No problems so far, except that the heater stops working in the summer when the filter is nearly full of debris, so I replace it each fall.
Good Luck,
Fred.
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wolfe10

Texas

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Joined: 10/08/2000

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Catching and measuring will NOT give you total capacity unless you do a lot of extra work-- discconnect and blow out lines to dash heater and if equipped to motor-aid water heater, completely drain engine block, etc. This is NOT a reliable method of determining total system capacity.
You really need to find total system capacity from Freightliner.
Also, be sure to clean the outside of the radiator AND the CAC while you are in there.
Brett Wolfe
1993 Foretravel 36' U-240
Cat 3116, Allison 3060
Caterpillar RV Engine Owner's Club: www.catrvclub.org
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wandering1

Texas

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Joined: 06/18/2002

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Fill it up with a 50/50 mix, test it, if you need more for the temps where you are then add more.
HR
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Gale Hawkins

Murray, KY

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Joined: 07/22/2007

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Here is my redneck approach. I learn the amount specs for the system. I then drain all I can but do not mess with blocks unless they have a drain cock. I do this a few times to get out all of the old coolant just using tap water.
Then I run the type coolant cleaner that is to stay in for up to 6 hours of running time. Then I flush several times again to get back to water only.
After that when I want to go all the way I get gallons of distilled water from WM at like 83 cents each and do one or two refills.
Key is to know how much the system holds and how much you have to add after a drain to get it back to the full mark. With most systems we have a drain removes about 50% of the coolant. In that case I just refill with pure (not 50/50 mix) antifreeze.
Personally I would not advice long term use of water only and will get a bottle of Prestone, etc of additive to add to the water that makes it look milkly if I am going to use pure water for more than the 6 hours.
I just finished the coolant area restore (nose job) on the 1976 Massey Ferguson diesel and started it up last night. Since it has a block drain cock it will drain about 99%. It held 3.5 gallons of water. While I actually prefer less than 50% mixture because of the enhanced cooling ability of water over antifreeze I may just go with 2 gallons of the green stuff (the only color I use after converting the 2002 Blazer back to green recommended pre 1996. This way should I need to add coolant I can just add water without concern for a few times.
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