Ford Powerstroke Diesel Forum banner

Silicone radiator hoses

4.2K views 6 replies 4 participants last post by  Mike Gs  
#1 ·
I’m gonna be flushing my coolant system soon so I figure I might as well change out the hoses too. I saw Mishimoto makes a silicone hose kit that has a lifetime warranty and supposedly gives better burst resistance than rubber. Anyone use these?


Sent from my iPhone using Tapatalk
 
#5 ·
things some MFG's don't disclose

this and possible fitment issues

Permeability to oil and fuel
The molecular structure of silicone doesn’t play well with oil, fuel, and other oil-based products. We do not recommend using silicone hoses for any applications where they will come in contact with fuel or oil.

Permeability to water molecules
Silicone is watertight, but water vapor can escape very slowly through the walls of the hose. Think of a balloon that you blow up with air and leave on a table for a week. The air escapes very, very slowly through the walls of the balloon. There’s a similar effect with silicone, and if you have silicone hoses on a car that you use as a daily driver, you’ll find yourself having to replace water in the reservoir from time to time - not because you have a leak, but simply because the water is escaping through the walls of your hose. While silicone hoses are a must for racing applications, some people don’t like them in a daily driver.
 
#6 ·
don't get silicon, my dieselsite silicon hoses on my 7.3 suck

they came with the coolant filter/water pump combo set up and the the hose clamps have of course eaten into the outer layers of the hose and tried to get dieselsite to replace them but they never called back

and yes they have to be that TITE not to leak

I wish I woulda got a regular old water pump and normal readily available hoses, cause I out of luck if one of the silicon hoses bursts or leaks, can't just go down the road to the parts store to get a new one and fix it on the side of the road
 

Attachments