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Car Forum / Dodge / Dodge Trucks / October 2006cooling drain vs. flush vs. chemical flush???
I was assuming a "cooling system flush" was always a chemical flush, where you flush it out with a special cleaner? The shops around here all generally charge around $100 for a "flush", but when I asked the shop that i chose to use (a shell station) if it's chem. flush he said no, that's about $20 more ($120). He said which one you want... I said i don't know which one i need. I told him it's been around 4 years since the the last drain/replace....then he quickly looked inside (opened the cap for 1 second) and said your'e fine, just get regular flush. so i did that. What's your opinion on this? Is a non-chem flush really any different than a drain and replace? (He said yes, because it drains it from the engine block as well as from the radiator???). thanks. >I was assuming a "cooling system flush" was always a chemical flush, > where you flush it out with a special cleaner? The shops around here [quoted text clipped - 8 lines] > because it drains it from the engine block as well as from the > radiator???). thanks. Bro, ya sorta lost me here. How does a "chemical" added to the flush change where the water is drained from? Maybe I'm wrong but a flush ya open everything. Roy >>I was assuming a "cooling system flush" was always a chemical flush, >> where you flush it out with a special cleaner? The shops around here [quoted text clipped - 14 lines] > >Roy It's not me... rofl Mac https://home.comcast.net/~mac.davis https://home.comcast.net/~mac.davis/wood_stuff.htm >>>I was assuming a "cooling system flush" was always a chemical flush, >>> where you flush it out with a special cleaner? The shops around here [quoted text clipped - 17 lines] >> > It's not me... rofl WTF!!! Color me stupid! <BFG> Roy > Mac > > https://home.comcast.net/~mac.davis > https://home.comcast.net/~mac.davis/wood_stuff.htm >I was assuming a "cooling system flush" was always a chemical flush, > where you flush it out with a special cleaner? The shops around here [quoted text clipped - 8 lines] > because it drains it from the engine block as well as from the > radiator???). thanks. I looked in my om and it was around 100,000 before it mentioned coolant change. Did I miss something?? Roy > I was assuming a "cooling system flush" was always a chemical flush, > where you flush it out with a special cleaner? The shops around here [quoted text clipped - 8 lines] > because it drains it from the engine block as well as from the > radiator???). thanks. One of the purposes of a flush is to get out rust, scale, debris, etc that tends to build up over the years. The other purpose is to replace the antifreeze that gets old and doesn't work as well anymore. A drain and replace or non-chem flush will (theoretically) remove the old fluid and replace with new. And just that. A chemical flush first places a cleaner in the system, then it's run for a while dissolve and mobilize the crud so it can be removed. then a flush and replace is done. Helps to prevent athersclerosis in the system I do a chemical flush and fill every 2 years or so.  Signature.boB Arrived: 2006 FXDI, Red. 1997 HD FXDWG - Turbocharged Stolen 11/26/05 in Denver 1HD1GEL10VY3200010 CO License J5822Z 2001 Dodge Dakota QC 5.9/4x4/3.92 1966 Mustang Coupe - Daily Driver 1965 FFR Cobra - 427W EFI, Damn Fast. I just asked the shell station that did it, and he said the $100 "flush" that he did is actually an "exchange"....a machine forces out the old coolant from the block and radiator, while (it seems) at the same time putting in new coolant. That seems like it would be mixing the old and new fluids together, doesn't it? When i think of the word "flush" i think of flushing it out with water or something (totally), then adding in the new. Seems like he did more of a "forced drain". But when he very quickly opened the cap and looked at the fluid when i first got there, he said the "flush" (exchange) was all i needed. p.s. But the word "exchange" has a negative meaning in the health field....just think of "exchanging body fluids" with someone who has HIV or something.... > > I was assuming a "cooling system flush" was always a chemical flush, > > where you flush it out with a special cleaner? The shops around here [quoted text clipped - 29 lines] > 1966 Mustang Coupe - Daily Driver > 1965 FFR Cobra - 427W EFI, Damn Fast. Mac, the difference is that your shop (at $100) better be providing service with a coolant replacement machine -- we'll say it's 9/10 effective versus about 1/2 for a $35 drain and fill. And for clarification -- agitating a cleaner should be used to treat a long-neglected system where corrosion has been allowed to take place, as opposed to prevent trouble (the coolant's job). If you're trying to get something back to square one, then maybe it's worth looking into. Otherwise, think of the millions of drivers who never do a thing outside a 3-10K oil change -- maybe replacing their radiators a little sooner than you -- and spend your money where you will. Jon Oops, a minute too late. Good research. > > > I was assuming a "cooling system flush" was always a chemical flush, > > > where you flush it out with a special cleaner? The shops around here [quoted text clipped - 42 lines] > > Jon |
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