What kind of antifreeze should I use on my Duramax Diesel?

You should only use silicate-free anti-freeze in diesel coolant systems. There are many other brands besides GM DexCool if you don’t want to use that. If you have the radiator serviced as recommended it does not cause any problems.

Where is the low coolant message on a Duramax?

During PDI, coolant should be added to fill the upper chamber of the radiator surge tank. (Fig. 6) A coolant level that is low enough to turn on the Low Coolant message will be below the horizontal line across the radiator surge tank. (Fig.

Is the coolant level on my Silverado Sierra low?

A Low Coolant message may be displayed on the Driver Information Center of some 2017-2018 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P). An inspection of the radiator surge tank may appear to show a low coolant condition.

Can you put GM Dexcool in a diesel engine?

Do not put the green stuff into your diesel engine! You should only use silicate-free anti-freeze in diesel coolant systems. There are many other brands besides GM DexCool if you don’t want to use that. If you have the radiator serviced as recommended it does not cause any problems.

Is there a coolant leak on a Duramax Diesel?

Currently, since December 2010 another supplement to the EGR cooler pressure tester adapter set, EN-48974-20, was shipped essential to dealers to diagnose EGR cooler engine coolant leaks on all 2010-2011 Duramax™ 6.6L engines equipped with multiple cooler EGR system.

Where is the coolant sensor on a Duramax Diesel?

7) The horizontal line is a baffle inside the surge tank that keeps the coolant from sloshing inside the tank and tripping the coolant level sensor, which is located below the baffle. A full coolant level will show the coolant at the bottom of the radiator surge tank fill neck.

How long does Duramax 50 / 50 freeze protection last?

A 50/50 mixture of DuraMAX Low Silicate Formula Antifreeze and Coolant and water provides freeze protection to -34°F and the boil-over protection is 265°F when a 15-lb pressure cape in good condition is used. When used as directed, this antifreeze will provide full protection for a minimum of one year.

How do you change antifreeze in a Duramax?

How to Change Antifreeze in a Duramax. Fill the cooling system with a 50-50 mix of Dex-cool coolant and distilled water. Start the engine and keep the coolant level topped off. Hold the engine at 2,500 rpm for five minutes, and then allow it to idle for five minutes, topping off as needed. Repeat the cycle until the coolant level no longer drops.

How much coolant does a 2013 Duramax take?

Seven gallons might sound like a lot of coolant for your 2013 Duramax, but then it’s a big, heavy-duty engine. When your Duramax is due for its first cooling system service at 150,000 miles it will take 3.5 gallons of coolant and 3.5 gallons of distilled water in a 50-50 mixture.

How much water does it take to cool a Duramax?

When your Duramax is due for its first cooling system service at 150,000 miles it will take 3.5 gallons of coolant and 3.5 gallons of distilled water in a 50-50 mixture. Turn the steering wheel turned all the way to the right. Shut the engine down and let it cool completely.

What are the problems with a Duramax diesel engine?

Both of these issues result in fuel leaking from the injector which can then enter the crankcase. This can lead to more serious problems, as diesel fuel doesn’t offer the same lubrication properties as oil. You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring.

What are the most common 6.6L LB7 Duramax problems?

What Are The Most Common 6.6L LB7 Duramax Problems? The LB7 Duramax engine made its debut on Chevrolet and GMC HD trucks in 2001. These diesel engines are where the Duramax started, and they have been so successful that the Duramax are still used in GM HD trucks today.

What kind of coolant does a diesel engine use?

Not one BIG diesel engine company (CAT, Cummins, Detroit, John Deere, etc.) uses anything BUT the green coolant in their diesel engines. I know of numerous semis pushing 2 million miles on green coolant. Dex-cool could never do that.

Can you mix two coolents in a Duramax?

Thanks for any help you might be able to offer. the two coolents can be mixxed when they first came out with dexcool you were not sopose to mix.. but after a few adjustments to the formula it is safe now! I just replaced the water pump on wifes 01 D/A, 162k on the clock.

What kind of antifreeze should I use on my Duramax Diesel?