| silicone [message #359279] |
Thu, 08 October 2020 16:01  |
rgogan
Messages: 82
Registered: February 2004
Location: Milwaukee, WI
Karma:
|
Member |
|
|
One of the biggest maintenance reducers for my motorhome has been switching from all rubber heater hoses to silicone. I cannot count the number of times previously that I would rupture a hose or open the engine compartment and find a massive aneurysm ready to rupture. It usually involved the hoses going back to the heat exchanger in the bathroom at the back end of the hot engine compartment. I knew the GMC maintenance manual calls for changing all hoses yearly but I just could not get myself to do this. The silicone hoses were expensive but completely eliminated any further failures since they have been in place for five years.
I just pulled my right header pipes off because of a failed remflex gasket right at the top center. It gave me a chance to look at the hoses going to the fuel pump. Sure enough, they were cracked and ready to fail. Thought I would be smart and install silicone fuel hoses and wanted to let everyone know what I found. Silicone is porous and can actually leak fuel and is not recommended for fuel lines.
Apparently some companies do produce silicone fuel lines but insert a teflon liner to deal with the porosity. For now I am sticking with traditional rubber lines because they last much longer than the hot heater hoses anyway.
Hope this helps someone avert an on the road disaster.
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
