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1997 Professional Chassis Raised Roof Presidential Limousine
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I bought a '94 FW and will need to flush and fill the cooling system. Any problems with switching to Dexcool coolant that became standard with '96 models?
 

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wont do you any good... and if you do you need to get every last drop and residu of the green stuff out of the dex-cool ill break down and not work right.

just use the green and put the addative in.
 

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There would be little benefit to using the Dex-Cool if it was not the "factory fill".
And merely flushing and getting "every drop out" doesn't matter either. The actual main benefit to using the Dex-Cool is found through the initial break-in period which is when the Dex-Cool coats the aluminum engine parts with an extra protective coating. It can only happen on a new engine and anytime thereafter, even the tiniest amount of "regular" green coolant contaminates the cooling system for good. Therefore you might as well just stick to a good quality standard coolant.
 
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