'07, 5.9 noisy radiator cap

[Motorhead]

Several times now, about a minute after start, the radiator cap growls for about 1/2 second. You can hear it in the truck with it running. I noticed some antifreze staining around the cap area. I removed the line to the resevoir tank and it is clear. I am not losing any coolant..... just the noise. I am just shy of 3,000 miles from new.

I don't think I have any internal problems but I wonder why the coolant is leaving "dot" stains around the radiator cap and the turbo intake hose.

I am still waiting for my warranty paperwork from Chrysler after Swift Dodge screwed it up.



One other question... What kind of coolant are they running from the factory? Mine looks orangish red. I sure hope it is NOT DEXCOOL.

 

[Regcabguy]

Cheap fix.

Several times now, about a minute after start, the radiator cap growls for about 1/2 second. You can hear it in the truck with it running. I noticed some antifreze staining around the cap area. I removed the line to the resevoir tank and it is clear. I am not losing any coolant..... just the noise. I am just shy of 3,000 miles from new.

I don't think I have any internal problems but I wonder why the coolant is leaving "dot" stains around the radiator cap and the turbo intake hose.

I am still waiting for my warranty paperwork from Chrysler after Swift Dodge screwed it up.



One other question... What kind of coolant are they running from the factory? Mine looks orangish red. I sure hope it is NOT DEXCOOL.

When new I noticed my '07 seeped some coolant where the tube from the recovery tank connects below the radiator cap. A small zip-tie solved the problem. Hope this helps.