Loosing coolant I think?????

[Bentley]

I have a 2003 Roadmaster RR8S chassis and the coolant level appears to have dropped in the holding tank. Does anyone know what this could be. I had a loose hose and tighten it thinking that was the problem but it appears to still be dropping fluid level in the tank.

Your help is greatly appreciated.

Bentley
2003 Windsor

[Steve Ownby]

Check your transmission fluid at the dip stick to make sure your coolant is not getting into your tranny fluid. It will be over full and look strange. Then have an oil analysis done to make sure coolant is not going into the crankcase. The transmission would be the most serious problem and the engine oil would be next. If not either of those two problems you can kind of relax and try to find a pressure leak over time.

[slickest1]

If it loosing coolant over a short period of time I would check for other sources of leaks. Check your oil for signs of coolant as well. Hopefully it is a loose clamp or hose leak.

[Diplomat Don]

Can you smell the coolant at the back of the coach when you stop. Some of the Monacos, like mine, had radiator leaks. Usually in the upper left or right corner of the radiator where the fins meet the tank.

[Bentley]

I will get it in for service soon to determine what the problem is. My transmission did not come with a dip stick and I have to use the key pad for the transmission. Thanks

[jimkate]

Is the coolant level dropping when the coach is sitting? Or does it only happen when you've driven a while?

[Fastcar]

Quote:

Originally Posted by Bentley I will get it in for service soon to determine what the problem is. My transmission did not come with a dip stick and I have to use the key pad for the transmission. Thanks

I'd be getting it checked out immediately.

If there is nothing visible then it very well could be internal.

If it is finding it's way into the engine oil and you have antifreeze in the coolant it won't be long before it wipes a bearing. When a bearing overheats a hole in the block could very well follow imo.

[Coma]

I had the same symptom. It was leaking from the heater core.

[Mike Canter]

I would take samples of both your motor oil and your tranny fluid and send them into the below company for analysis.

Buy an Engine Oil Analysis Kit Today | Engine Oil Analysis Service

[Bentley]

Thanks all for their comments. What actually took place was the overflow tank on my cummins 370 had two small holes that allowed coolant to leak out once the system was pressurized. So my worries about the transmission and engine were for not. Bentley

[Arch Hoagland]

I've seen some horror stories on here about the cost of repairing those tanks.

Have you had yours fixed, and if so, how much was it?

[Stretch]

'''''''''''the tank you are talking about is under pressure while driving. There is a hose located just under the pressure cap. If the tank is too full the coolant will leak out this hose. Then when the engine cools you will have less coolant than when you started with. I had this problem. I added a coolant recovery tank. Now the coolant that used to run out the hose now drains from the hose into the coolant recovery tank. When the engine cools off the coolant is sucked back into the tank. Never loose a drop of coolant.