Question about 1998 Cadillac Catera

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What will happen to my engine if i mix regular antifreeze with dex cool coolant?

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The manufacturer states the type of antifreeze your engine is designed to use ... if you use the incorrect type, expect major corrosion and other damage to occur. Look in the owners manual for specific direction. Another place to get good word on this topic is from the sales clerk at your local auto parts supplier.

Posted on May 09, 2010

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1 Answer

What kind of antifreeze do I use for my 1999 Saturn


Well, a 50-50 solution of any good green AF is okay, unless you have the dex-cool, orange colored, GM brand type of AF... If you have that, you want to use orange again. You cannot mix dex-cool with regular green AF (like Prestone or any brand AF that is green colored). A lot of people don't like using dex-cool so they change to regular AF. But to do so, you need to flush out every trace of the dex-cool. If they get mixed, problems like sludge in the coolant may result.

Nov 03, 2016 | Saturn Cars & Trucks

1 Answer

I added dex cool to regular anitfreeze what will happen


Best is to drain the cooling system and fill the correct antifreeze mixture.

Aug 22, 2012 | 2003 Chevrolet Impala

1 Answer

Can I replace my dex coolant with regular antifreeze? in my 1997 chevy malibu and how


they say you cant mix different coolants but you can go to auto-zone etc, and buy a cheaper anti-freeze for general motors products. its a 50/50 mix for all gm cars and trucks.you can add this coolant to any brand of anti-freeze. its called universal type anti-freeze. to run a differant anti-freeze in it, you have to flush out complete engine and radiator because the dex-cool and the green stuff do not mix well and cause engine corrosion etc. dex-cool is reccomended for all chevy engines. good-day !

Sep 11, 2011 | Chevrolet Malibu Cars & Trucks

2 Answers

Can you use dex-cool in a 2006 scion xb


dex- cool is the orange coolant, you can use this only if it already has dex -cool, dont mix it with the green type coolant, if it has green coolant you will need to drain it before using dex-cool

Jan 14, 2011 | 2006 Scion xB

1 Answer

What type of anti-freeze is recommended?


Many newer cars from GM require Dex-Cool, but if you read the labels of regular antifreeze, from Prestone, for instance, the warranty is still 5 years and it can mix with any color antifreeze.

I use regular antifreeze vs. Dex-Cool in my 1997 Cadillac Deville and, (knock on wood) haven't had any problems.

I believe that Dex Cool is a little bit more expensive than regular antifreeze.

Use a 50/50 mixture of whatever type you plan to use, though.

Dec 19, 2010 | 2006 Hummer H2

2 Answers

What is the difference between Dex-Cool and regular anti-freeze? What will happen if I use regular instead of Dex-Cool?


nothing they are all the same ,just use pure eythelene glycol and no diluted solutions ,you cannot hurt the vehicle with neat antifreeze in it

Feb 10, 2010 | 1997 Chevrolet Cavalier

2 Answers

Temperature guage keeps going hot and cold


buy you a new temp sensor from the dealer not autozone,try that,my suburban did the same thing cause i got a cheap piece of **** sensor from az

Jan 05, 2010 | 1997 GMC Sierra

1 Answer

I didn't know to put dexa cool antifreeze in my van and i added a gallon of regular antifreeze i can see my fluid coming out pretty fast after driving my van...heater blows intermittently...please help


you cannot mix dex and regular it will cause a gel affect you will need to get a coolant flush and change to regular dex is terrible it will be ok to do so

Dec 22, 2009 | Dodge Caravan Cars & Trucks

2 Answers

What color antifreeze


Most manufs. do NOT recommend mixing Dexcool[your "Orange" coolant] and the older "Green" antifreeze unless it's an emergency. They're not really made of the same chemicals,and don't 'play' well together long term inside an engine. I've seen the pre-mixed coolant for sale, claiming a "universal" mixing ability with ANY type coolant. But, if it's my wallet and MY time involved, I'd track down the right/correct coolant your engine.

Jun 11, 2009 | 2001 Chevrolet Malibu

1 Answer

Re: Dex-Cool in 1999 Lumina


The major reason for using dex-cool is that antifreeze is often neglected as a service item. If neglected, it becomes acidic over time which is particularly important with the use of aluminium in most major components which are served by antifreeze. Acid causes etching and premature failure of gaskets and permanent damage to blocks, heads and especially the radiator and heater core, which are not vert thick to begin with.
Since "normal" antifreeze acidifies faster than does dex-cool, mixing both together causes a change in breakdown rate...the more "normal" coolant added, the faster it breaks down.
Both coolants do not react chemically with each other and therefore retain the same ability to prevent boil over and freezing.
In reality, normal coolant can be used with little or no effect on components, provided that you change it every year. (that's where the EPA gets involved) They do not want people dumping this stuff into the ground, so they push for extended service intervals. Since dex cool has a longer service life, that's what they want you to use.
As far as how you chasnge the coolant, it is always a good idea to flush system during a change, regardless of antifreeze type. This removes solid particles which can plug radiator core. Radiators are much smaller than their older counterparts. Loss of even a small portion of cooling area can cause overheating. Engine running temps are also higher than older vehicles (heat=power output). Therefore most systems have a much smaller margin of error than before. What I find though is that regular flushing can also be bad for the system as the chems eat away at metal components in order to clean. I recommend regualr or dex cool antifreeze systems be flushed with water only, once a year, but retaining what you removed and filtering it through a coffee filter, using it during the year to "top off" the system. To retain effectiveness of coolant, use a hydrometer to check concentration, adding new coolant to bring reading to proper protection level.Then, every three years, do a complete chem flush and change entire batch. This keeps your system clean and the epa happy!

Dec 17, 2008 | 1999 Chevrolet Lumina

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