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Old 08-02-2021, 01:01 PM   #1
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Adding radiator water

Hello, i have a 2003 fleetwood discovry with a 330 caterpillar diesel engine. How do i add water to rafoator? On the radiator itself there are instructions but i have no idea where any of these items ate at. Owners manual does not cover this. Checked online didnt find anything. Help!
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Old 08-02-2021, 01:19 PM   #2
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Assuming your '03 with Cat is similar to my '02 with Cat

There is a plastic SURGE TANK on the right side of the radiator looking towards the front of the RV. Standing behind the RV.

That tank has the traditional 15 PSI radiator cap on it. That's where you pour in 'pink' antifreeze. Or maybe 'red'...I forget. Not green or orange. Check the Cat book. There's just enough room above to be able to get a jug of antifreeze in the right position to pour it in. I always get 50/50 Long Life Cat approved, usually from Napa. Cat antifreeze is special stuff so don't scrimp on it.

Check the level first! That's between those two arrows embossed into the plastic. Hard to see if the tank is all grimy.

Those plastic tanks start weeping after a few years and need to be replaced. If you're a DIY'er, it's not that hard of a job...here's my ad free article about it: Radiator and cooling...

And here's a picture of the tank...

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Old 08-02-2021, 02:23 PM   #3
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In Jim's picture, it is the upper tank where coolant goes NOT the lower tank which is for power steering oil.

Be aware, Freightliner, the ones who place the engines in the chassis, and they are the ones who install the radiators. They only recommend you use FLEET CHARGEŽ SCA Pre-Charged Heavy Duty Coolant/Antifreeze low silicate, low total dissolved solids antifreeze. This is because they place sensors in the radiators and those sensors do not play well with the ELC coolants.

However, and lot of Caterpillar engine owners have switched to ELC coolants without problems......or at least without any "reported' problems. Call Freightliner and check it out. The engine really doesn't care which coolant you use as long as it meet minimum specification, but Freightliner sure does.
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Old 08-02-2021, 11:15 PM   #4
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Quote:
Originally Posted by Thorneeta View Post
Hello, i have a 2003 fleetwood discovry with a 330 caterpillar diesel engine. How do i add water to rafoator? On the radiator itself there are instructions but i have no idea where any of these items ate at. Owners manual does not cover this. Checked online didnt find anything. Help!
What I want to know is, what in the world is a "rafoater"?
Scott
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