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Old 10-03-2014, 11:29 AM   #1
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I have a 40 ft 2008 Damon Tuscany, with a 360 Cummins diesel and Allison transmission. On a recent trip (hot day about 90 degree) I noticed some overheating, the gauge registered about 1/2 way between normal and 3/4 mark. I checked the coolant which was a little low. I consulted with a couple repair shops and they both said that it was not a problem if it didn't get passed the 3/4 mark. Just wondered if anyone else had this occur?

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Old 10-03-2014, 11:42 AM   #2
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Location: Woodburn Oregon USA
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I believe your Tuscany to be a rear radiator coach. If so it is probably time to clean the radiator and CAC as rear radiator coaches are notorious for plugging up the radiator and CAC with dirt. From the engine side you need to spray the radiator and CAC with a good degreaser such as Simple Green and then rinse well. I personally use Awesome Cleaner from the dollar store as it is cheap and does a great job. If you do a search here you should be able to find volumes on how to clean rear radiators.

Brian, Loretta & Daisy (Golden Retriever)
2008 Holiday Rambler Endeavor 40 PDQ , ISL 400
2014 Ford Explorer toad
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Old 10-03-2014, 11:57 AM   #3
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Just spraying and cleaning from the outside is probably less than half a job. The air flow and slobber tube tend to blow oil and dirt onto the fins from the 'front' side. If you don't spray cleaner and water from underneath and from the top (under the bed?) you won't get a lot of the grime off. The radiator is a sandwich of radiator, inner cooler, and transmission cooler, probably 8" or more thick. Spray with Simple Green or similar, wait for oil/grease to dissolve, then rinse with spray hose. REPEAT from both front and back of the cooling system. Don't use a power washer, you'll damage the cooling fins.

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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