DanaT

So a long while ago almost everything in the 951 engine bay was replaced. By long ago 2009 or 2010. And definitely less than 1000 miles on the 951 since then. It spends a lot of time in the garage.

The complete silicone coolant hose kit from one of the known vendors here was installed as part of this renewal. Now I am getting coolant leaking onto the garage floor. I put dye in the coolant to find leaks. It seems almost every hose is glowing (with UV light) around the ends of all the hoses. Some hoses are glowing in the reinforcing fibers on the ends (could be residual from leaking out the ends).

The silicone hoses were supposed be far superior.

Has anyone else has this issue using silicone hoses? Do they need be re retightened all the time?

I am seriously considering removing them and putting on normal hoses. I dont want to be retightening hoses every year and at some point they will be crushed and not able to be tightened.

If anyone has insight into the silicone hoses, for street use or for holding the garage floor down, it would great.

931guru

Replace them with good old rubber hoses. For more information, google "silicone hoses leaking"

GPA951s

I put silicone hoses on one of my cars 12 years ago.. no issues im wondering if the coolant you are using is causing the aluminum some issues? ( swelling from oxidizing) .. just food for thought..

MM951

I had the same issue and am about to put new stock rubber back on - almost every hose at least drips from new.

944M3

I installed Lindsey’s complete set when I refreshed the engine about 6 years ago. Zero leaks or issues. Never had to re-tighten.

That being said, for street use I would use stock rubber. Maybe use silicone in the hotter areas of the engine bay. They were a pain to install and somewhat overkill.