The many other reports that you can find were problems that for the most part resulted from lack of maintenance. The only trouble spot that I read were some initial 4300s that were factory filled with Dexcool were having problems with it. There are quite a few myths about Dexcool. If I'm forgetting anything surely one of the experts here can provide more details. This could eventually lead to a head gasket breach. Other damages could also happen when the rust inhibitors would deplete such as the head gasket would start to rust from the inside out. However, because these problems were in most cases the result of neglect GM wouldn't cover the repair costs, hence the reports you read online from pissed off people. Depending on the severity of the problem this may cause complete engine failure and hefty repair bill. When the engine does overheat it may cause aluminum parts to warp as aluminum is less resistent to heat than cast iron heads and blocks that were used in earlier engine designs. If the problem is not noticed early the cooling system would become badly clogged and this would eventually cause the engine to overheat. Ive read many places that the factory, in my case, Lordstown Ohio Assembly plant, uses a pink GM DEX-COOL which is superior to the commonly found orange DEX-COOL. In time the combination of Dexcool and rust would form a reddish paste that would clog the cooling system. I need to top up the coolant in my 14 Cruze LTZ and I can clearly see its pink. As a result the corrosion inhibitors in the coolant were depleted and their engines and cooling systems started to rust from the inside out.įrom what I read the whole process is once the system begins to rust on the inside Dexcool would pick up the rust and circulate it around to other parts in the system. The whichever first part is very important but apparently some people were keeping the factory filled coolant in their cars well passed the 5 year interval simply because they didn't hit 240,000 kms yet. With Dexcool that interval can be extended to 5 years or 240,000 kms whichever first. Normally you'd have to replace the silicated (green) coolant every 50,000 kms or 2 years whichever first. Discover unparalleled freeze protection and exceptional anti-boil performance with the Zerex Valvoline Dex-Cool Antifreeze/Coolant, exceeding industry benchmarks for optimal engine care. The only trouble spot that I read were some initial 4300s that were factory filled with Dexcool were having problems with it. Here are some solutions to the Chevy Impala cooling fan continuously staying on even when the engine is off: 1. Can be used for top-off, complete drain and refill or flush and refill of the cooling system.Click to expand. Must mix with high quality (distilled/deionized) water to the desired ratio. Includes protection against scale, rust and corrosion of all cooling system metals, including aluminum.All GM vehicles 1995 & newer /GM approved (GMC, Chevrolet, Buick, Cadillac, Pontiac, Saturn, Oldsmobile, Hummer), most Ford vehicles 2011- 2018 (Ford, Lincoln, Mercury) and most Chrysler vehicles 2013 & newer (Ram, Dodge, Jeep, Chrysler).5 Yr., 150,000 mile Extended life formula Specially formulated to work with vehicles using orange colored fluid OAT.The problem was this combo turned into mud, clogged cooling systems, especially heater cores. it was found it reacted to 'pellets' GM put in the cooling system I assume as a stop leak component. F Antiboil/overheat protection to +276 Deg. Dexcool was introduced as a 100k mi service free coolant. Bought this car from my grandfather and recently learned he's never done a coolant flush on it, so the car has about 8 year old fluid Would like to get a flush (since the manual says every 100k or every 5 years), but I've heard some bad things about. This fluid is designed to last 5yrs / 150,000 miles. Hello again I've got a 2009 Impala LT with about 75k miles on it. These fluids are designed to not only manage the engine temp, antifreeze and antiboil, they also guard against rust & corrosion. Prestone's Antifreeze+Coolants are designed to the highest standards using state of the art technology. This extended life coolant is formulated for these engines and the specific needs placed on the coolant. i have a 2003 chevy impala with a refurbished 6cyl jasper engine losing antifreeze about half gallon every 2 weeks had radiator hose read more. Prestone DEX-COOL (orange) antifreeze+coolant (AFC) is specially designed to work with All GM vehicles 1995 & newer 'GM approved formula' (GMC, Chevrolet, Buick, Cadillac, Pontiac, Saturn, Oldsmobile, Hummer), most Ford vehicles 2011 - 2018 (Ford, Lincoln, Mercury) and most FCA vehicles 2013 & newer (Ram, Dodge, Jeep, Chrysler). 2003 chevy impala: cool antifreeze problem.cars.
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