Question about 2000 Oldsmobile Silhouette

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I have a leak . . . . . . . .

I have a 2002 chevorlet blazer that has little to no dex-cool. i took it to goodyear and they said that it was my upper and lower intake gaskets. can i fix it myself?

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It is very hard work that requires a fair amount of knowledge. I would take it to a shop. If you are not an accomplished mechanic.

Posted on Feb 28, 2009

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Hi the engine coolant is low what do I put in there?


Add a 50/50 mix of Dex-Cool antifreeze and distilled water. You can also buy it premixed. If your coolant is low then you more than likely have a leak. You may also have a blown head gasket which is very serious. Symptoms of a blown head gasket are white smoke from the exhaust, loss of coolant with no apparent leak, oil level overfull, a grey foamy substance on the under-side of the oil fill cap.

Apr 24, 2011 | 1998 Chevrolet Blazer

1 Answer

Over heating 2002 Aztek First mechanic we took it to: replaced intake manifold and water pump, flushed system because dex-cool coolant had caused damage. Still over heated. Same mechanic said it was the...


If the water pump and thermostat have been replaced and the system has been properly refilled and bled , the only thing left is the radiator. If coolant is not flowing through it properly , vehicle will run hot. If your car has overheated to the point of boiling over , your new thermostat may now be damaged again.. As for the fans , they only come on when the coolant reaches a certain temprature. Under normal driving conditions , they would not need to come on while the vehicle is moving , as the air flow from driving down the road would be enough to cool the engine.

Feb 03, 2011 | 2002 Pontiac Aztek

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

2 Answers

Reddish liquid leaking from under front right axle. coolant light on and off


Your vehicle uses GM Dex-Cool from the factory which is a coolant that is red in color. You more than likely have a leak so the system is low and therefore the coolant light is acting up.

There are several Technical Service Bulletins on this year Saturn for intake manifold gasket leaks for one, but it could be from a lot of places.

Washing the engine and letting it dry, then running it the next day and hunting around with a flashlight may help pinpoint the problem area. Check hose clamp areas of course.

For difficult leaks they make a Dex-Cool compatible UV Dye that can be seen with a UV light at a repair shop.

best wishes!

Jan 12, 2011 | 2002 Saturn Ls 4dr Sedan

2 Answers

Is it ok if i used Prestone 50/50 Prediluted Antifreeze/coolant for my 2001 chevy blazer other than dez cool? I did not mix the two i ve been using the Prestone since i had my blazer for about a year.


It's OK to use Prestone 50/50 Prediluted Antifreeze/coolant. But, it needs to be DEX COOL. There is a reason for it. The seals and the water pump in the cooling system are made to run with the DEX COOL. Anything like a non-compatible coolant will cause problems down the road. I wouldn't risk it. They do make 50/50 DEX COOL.

Sep 23, 2009 | 2001 Chevrolet Blazer

2 Answers

Radiator hose leak and anit-freeze types


Problem isn't with plastic, its with aluminum... If you shorten the service intervals "normal" coolant will work equally well but you cannot extend intervals or acid buildup will make short work of radiator, heater core and cylinder head(s). As far as I know, you can get two years from normal coolant but I change out about half every year on my stuff and everything is fine.

Sep 02, 2009 | 2002 Chevrolet Silverado 2500HD

2 Answers

Radiator replacement


  1. Remove air cleaner and duct assembly.
  2. Drain the coolant.
    1. Remove the engine mount struts.
    2. Remove the cooling fans with the cooling fan shroud.
    3. Remove the radiator upper hose from the radiator.
    4. Remove the radiator lower hose from the radiator.
    5. Disconnect the transaxle oil cooler lines from the radiator.
    6. Remove the radiator brackets and bolts.
    7. Remove the radiator. Installation Procedure
    1. Install the radiator. Notice: Refer to Fastener Notice in Service Precautions.
      1. Install the radiator brackets and bolts.
        • Tighten the bolts to 24 Nm (18 ft. lbs.) .
      1. Connect the transaxle oil cooler lines to the radiator.
      2. Install the radiator upper hose to the radiator.
      3. Install the radiator lower hose to the radiator.
      4. Install the cooling fans with the cooling fan shroud.
      5. Install the engine mount struts. Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL (R) or HAVOLINE (R) DEX-COOL (R) coolant. If Coolant other than DEX-COOL (R) or HAVOLINE (R) DEX-COOL (R) is added to the system the engine coolant will require change sooner; at 50,000 km (30,000 mi) or 24 months.
      6. Fill the cooling system.
      7. Install the air cleaner and duct assembly.

Jun 28, 2009 | 2000 Chevrolet Venture

1 Answer

Gm dex-cool vs prestone anti-freeze...


yes,your guy is right,a lot of gm cars have the int. gasket problem because of dex.

Feb 23, 2009 | 1995 Pontiac Grand Prix

3 Answers

1998 monte carlo coolant


I just did a lower intake reseal on my 98 monte's 3100, it's not tough to do, the biggest part is paying attention to what pushrod came from what position and ensuring they go back to where they came from, not only for wear patterns, but for different lengths on the intake and exhaust push-rods.

I work for a GM dealer in northwest montana, and I can say it's not cheap labor-wise, generally around 6 hours of labor and around 300 in parts...it can add up quick, but when those intakes start leaking oil and coolant, things can go sour quickly...espeically if coolant starts leaking into the engine, not good for bearings.

Dex cool is not the problem with these gaskets leaking, it's common on 3100's, 3400's, 3300's, etc, any motor from that series that has that style of lower intake is prone to the issue, the rubber/plastic/composite will eventually warp, break down, crack, seperate from hot and cold cycles, I've seen it all too many times. Dex cool is the best coolant out there, there's a reason that prestone, peak, zerex can't compete, in fact a few of those blends are blends that are less efficient that Dex that GM decided not to patent. But the Dex patent is due to run out soon to the point everyone can start using dex. One issue with dex is the "gum-up" problem when the mixture is not ideal and the level is left low, but flushing and setting proper mixture (50/50) and level will alleviate this problem.

Jun 22, 2008 | 1998 Chevrolet Monte Carlo

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