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Silverado prevenitive maint. ?
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<blockquote data-quote="swampratt" data-source="post: 3135167" data-attributes="member: 15054"><p>I used to drive 70,000+ miles a year as did the wife.. that is a lot of oil changes.</p><p>That is a lot of vehicles also.</p><p>I always got them cheap though and most needed built. I had owned over 250 vehicles by the time i was 24.</p><p>Many were for parts but I still owned them.</p><p></p><p>There was a guy that went into my uncles shop and wanted his radiator replaced as it was leaking and wanted my uncle to save the antifreeze and reuse it..The old guy said IT NEVER GOES BAD.</p><p>Fine and dandy the customer is always right.</p><p></p><p>Drained it into a very clean galvanized steel pan that evening and called it a day.</p><p>Next morning my uncle went to pour the fluid into the new radiator but stopped after looking into the pan.</p><p></p><p>The fluid had eaten the galvanized coating off the pan.</p><p>It became acidic.</p><p>The customer was brought in to witness this and changed his thinking.</p><p>Head gaskets water pumps heater cores they all take a beating when the coolant becomes acidic.</p><p></p><p>Coolant pH</p><p>One major factor on the corrosion rate of the metals is the coolant’s pH. Shifts in coolant pH will affect the metals that corrode and the rate of each metal’s corrosion. The pH scale runs from 0 to 14. A coolant becomes more acidic closer to zero; and more alkaline toward 14. Coolant pH should always be maintained between 8.5 and 11. If a coolant’s pH drops below 8.5, it will become aggressive to ferrous metals (cast iron and steel), aluminum, copper and brass. If it increases above 11, it will become aggressive to aluminum and solder in a cooling system.</p><p></p><p>I copied that last paragraph from here.</p><p><a href="http://penray.com/cooling-system-techfacts/metal-corrosion/" target="_blank">http://penray.com/cooling-system-techfacts/metal-corrosion/</a></p><p></p><p>Check PH levels guys</p></blockquote><p></p>
[QUOTE="swampratt, post: 3135167, member: 15054"] I used to drive 70,000+ miles a year as did the wife.. that is a lot of oil changes. That is a lot of vehicles also. I always got them cheap though and most needed built. I had owned over 250 vehicles by the time i was 24. Many were for parts but I still owned them. There was a guy that went into my uncles shop and wanted his radiator replaced as it was leaking and wanted my uncle to save the antifreeze and reuse it..The old guy said IT NEVER GOES BAD. Fine and dandy the customer is always right. Drained it into a very clean galvanized steel pan that evening and called it a day. Next morning my uncle went to pour the fluid into the new radiator but stopped after looking into the pan. The fluid had eaten the galvanized coating off the pan. It became acidic. The customer was brought in to witness this and changed his thinking. Head gaskets water pumps heater cores they all take a beating when the coolant becomes acidic. Coolant pH One major factor on the corrosion rate of the metals is the coolant’s pH. Shifts in coolant pH will affect the metals that corrode and the rate of each metal’s corrosion. The pH scale runs from 0 to 14. A coolant becomes more acidic closer to zero; and more alkaline toward 14. Coolant pH should always be maintained between 8.5 and 11. If a coolant’s pH drops below 8.5, it will become aggressive to ferrous metals (cast iron and steel), aluminum, copper and brass. If it increases above 11, it will become aggressive to aluminum and solder in a cooling system. I copied that last paragraph from here. [URL]http://penray.com/cooling-system-techfacts/metal-corrosion/[/URL] Check PH levels guys [/QUOTE]
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