Thermostat and Coolant Flush Questions
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This is a discussion on Thermostat and Coolant Flush Questions within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I'm looking for some advice on flushing my coolant system. I had the system flushed at 30,000 miles, and I'm ...

  1. #1
    Registered User psychobooe's Avatar
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    Thermostat and Coolant Flush Questions

    I'm looking for some advice on flushing my coolant system. I had the system flushed at 30,000 miles, and I'm at 63,000 now and looking to get it done again. The shop that I talked to mentioned running a cleaning agent through the system instead of just flushing it out with water. I wondered if this was safe, as I've only heard of flushing the system with water. Furthermore, I'm looking at getting this kit from Crucial Racing and have it installed at the same time. http://www.crucialracing.com/products/coolkit.php
    My other question is this, do I need to change the thermostat everytime I have the coolant flushed (every 30K)?
    Thanks for the help guys.

    psycho
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    Moderator GV27's Avatar
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    No need to change the thermostat unless it goes bad.

    They'll just use something lie Prestone Super Flush. Don't let 'em charge you a lot - the stuff is $4 a bottle and you only need one.
    "Inasmuch as ye have done it to one of the least of these my brethren, ye have done it to me." -Jesus

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    Registered User psychobooe's Avatar
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    Cool, I think I'm still going to get the Crucial thermostat anyway. As for the cleaning agent, I figured it was a standard thing to do. I had just never heard the processed explained the way that this guy explained it. Thanks for the clarification.
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    Registered User psychobooe's Avatar
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    Alright, one more question, are the Crucial thermostat and radiator cap and Samco radiator hoses worth the money?
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    Moderator GV27's Avatar
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    I don't think so. All that stuff OEM adds up to a whopping $45! Those hoses especially are big money - the thremostat and cap are $90 seperately at Crucial making the hoses $100. OEM hoses are $20.

    I guess there could be some benefits from the fancy cap and thermostat - maybe. But not the hoses IMO.

    C
    "Inasmuch as ye have done it to one of the least of these my brethren, ye have done it to me." -Jesus

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    Registered User psychobooe's Avatar
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    Does anybody on here have the Samco radiator hoses?
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    Registered User Darrell's Avatar
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    Quote Originally Posted by psychobooe
    Cool, I think I'm still going to get the Crucial thermostat anyway.
    I don't see the need for this kit. Subaru designed the WRX cooling system with the turbo system in mind. I can see an aftermarket cooling as being necessary for a naturally aspirated engine that had a turbo added as a modification.
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    Quote Originally Posted by psychobooe
    Cool, I think I'm still going to get the Crucial thermostat anyway. As for the cleaning agent, I figured it was a standard thing to do. I had just never heard the processed explained the way that this guy explained it. Thanks for the clarification.

    i work at a lube shop and we use just water to flush it out, never heard of useing a "cleaning agent". sometimes when the coolant has rusted or clayed up you may have to flush it a couple of times with water.

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