Is it okay to apply RTV on radiator neck?

Tiny
05ACURATL
  • MEMBER
  • 2000 FORD F-250
  • 6.8L
  • V10
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
The up­per ra­di­a­tor hose was flared and al­lowed coolant to seep through caus­ing the ra­di­a­tor neck (plas­tic) to form cal­cium de­posit. I sanded the radiator neck using 120 grit sandpaper to remove the calcium deposit and ended up thinning the neck more than I should've. I replaced the upper radiator hose however pressure is leaking between the hose and the radiator neck. Can I use RTV on the radiator neck to seal the leak? If yes, then which RTV should I use (black, blue, gray, etc.)? And if no, then is there something else I can do (other than replacing the radiator)?
Do you
have the same problem?
Yes
No
Sunday, April 4th, 2021 AT 4:27 AM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

No to the RTV. It will not last due to the heat at all.

The only repair is to replace the radiator. It is the correct repair and it will last without the fear of it failing. I attached the procedure and also a radiator from rock auto for you to view.

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Roy
Was this
answer
helpful?
Yes
No
Sunday, April 4th, 2021 AT 5:22 AM

Please login or register to post a reply.

Sponsored links