1996 F53 Motorhome Radiator?

Gjac wrote:
You said in your OP "I have a tank leaking on radiator" is your over flow tank leaking or the radiator itself? The overflow tanks are easy and cheap to replace. How did you flush the radiator? If you remove the lower hose and thermostat and use a garden hose in the the lower hose you will get a good complete flush. You radiator can be checked with a cheap IR gun from HF by taking readings every several ins from the top to bottom in a grid pattern. In a functioning radiator you will see hi temps at the inlet on top and lower temps at the out let and a reduction in water temperature of about 50 degrees. Any blockage will show up as a colder reading. This usually shows up in the center of the radiator behind the fan clutch. You probably have a 195 Thermostat in the MH and on a hot day 215 is not overly hot especially when reading a 24 year old dash gauge which may not be accurate. A HD thermostat with a by pass hole in the flange can help lower temps also. Of course if the radiator itself is leaking then just replace it if it is just your over flow tank try these simple thing first.

It's the Radiator tank that's leaking. I wish it was only the overflow tank. lol. The problem started about a year ago when the temp started moving towards hot. It got to the point it would run just to the right of the L on normal. I put a mechanical gauge in it so I can see actual temperature. At 60-65 runs 215 gets up to 225 or so on hills. The Radiator was flushed with Radiator flush real goo. When I pulled the cap it had some brown crud by the cap. I'm thinking the previous owner put stop leak in it. Changed thermostat with a Premium 192 one. I have a Radiator shop set up to take a look at the radiator and make any repair that it needs.