 Replace radiator and heater hoses ? |
 Feb 27, 2014 - 12:39 PM
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Enthusiast Joined Sep 19, '11 From TX Currently Offline Reputation: 0 (0%)  |
I have a 1998 GT Convertible with 109K on it. It's due for a cooling system flush and fill, and I noticed that all the coolant hoses look original to the car. Now the radiator hoses are no big deal, but it appears that there are bunch of smaller molded hoses for the heater core, oil cooler, throttle body etc. Adding this all up gets quite expensive. This is a lot tougher than other cars where you can just buy a few feet of bulk hose for a few dollars and cut it to fit. The cooling system appears to be in great shape and the car has never had overheating issues.
How long are these hoses good for? The hoses look good on the outside and are soft to the touch like new hose. My instinct tells me that 16 years is way overdue for replacement, but with the cost involved I want to make sure I don't spend a bunch of cash replacing hoses that are perfectly fine. This post has been edited by Pyrotechnic: Feb 27, 2014 - 12:40 PM |
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Mar 4, 2014 - 9:36 PM
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Enthusiast  Joined Mar 3, '05 From Richmond, B.C. Currently Offline Reputation: 0 (0%) |
A caveat to your Toyota not caring is certain anti-freezes do contain compounds such as Dex-Cool's 2-Ethylhexanoic Acid (aka 2-EHA) intended to soften plastics (or more accurately, prevent them from getting brittle). If your system isn't designed for these compounds -- which is to say it was built with non-silicone or non-nylon hoses and gaskets -- the potential for damage exists.
The other issue is silicates. Japanese long-life coolants do not contain silicates because they've found silicates to produce issues with water pump seals. North American conventional ethylene glycol anti-freeze use silicates and phosphates to prevent corrosion. European anti-freeze avoids phosphates because they react with hard water to form mineral scales, which insulate the engine, replacing the phosphates with neutralized carboxylic acids. Asian anti-freezes remove silicates, keeping the phosphates and replacing the silicates with neutralized carboxylic acids. An anti-freeze with nothing but neutralized carboxylic acids will satisfy both European and Asian requirements. |
Posts in this topic
Pyrotechnic Replace radiator and heater hoses ? Feb 27, 2014 - 12:39 PM
Smaay as long as they are not leaking and showing no sig... Feb 27, 2014 - 1:49 PM eMrock32 I work on classic cars at work. Some still have ho... Feb 27, 2014 - 2:03 PM Galcobar That said, the act of replacing the radiator can s... Mar 1, 2014 - 1:10 AM
blockustomz QUOTE (Galcobar @ Mar 1, 2014 - 1:10... Mar 1, 2014 - 3:03 AM Pyrotechnic Thanks everyone. I do not plan to remove any hoses... Mar 3, 2014 - 10:52 AM richee3 Use Toyota antifreeze, not Prestone or any other g... Mar 3, 2014 - 11:48 AM Pyrotechnic QUOTE (richee3 @ Mar 3, 2014 - 12:48... Mar 4, 2014 - 12:21 PM Special_Edy Good call on replacing the radiator cap.
I had a c... Mar 3, 2014 - 6:21 PM Special_Edy I think your toyota could care less. You could pro... Mar 4, 2014 - 1:19 PM Pyrotechnic G-05 uses organic acids and a very small amount of... Mar 5, 2014 - 12:29 PM Special_Edy I guess you better hope all your seals, hoses, o-r... Mar 5, 2014 - 7:58 PM BonzaiCelica so not to create a new thread. whats the name of t... Jan 20, 2015 - 2:58 PM VavAlephVav That's the heater core Inlet hose. Idk if it h... Jan 20, 2015 - 8:43 PM |
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