Hi guys, I have. 2012 Chev Silverado LTZ 2500. My question is, I recently put 12 litres of Add Blue into her, but it was only 10 mths ago I added 6 ltrsto top her up.... Can anyone tell me if they are supposed to use that amount, when during that time I have travelled about 1600 Klm

kevin

I know nothing about AdBlue but found the following on the AdBlue web site

How much AdBlue do I need?

Average consumption of AdBlue is generally 5% of diesel use, so you will need to tank much less for AdBlue then you do for diesel. You will use about 5 liters of AdBlue to every 100 liters of diesel.

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If you are using 15L/100k of fuel then you should have used 12L of AdBlue if my sums are right.

1600/100  x 15  x 0.05 

Thanks for the info, it has helped a little, but I have also been advised to have the emissions system removed, then won't have all this hassle...

thanks

You might be right there, as it did go into limp mode once On The freeway, which freaked me out, as I did not know what to do.. Just limped along at 20 klm p/hr. !!!!

Hi Branchi

If it helps I can only give you a comparison, based on what you post you are saying you used 6L Add Blue in 1600km?  = 0.0038L/100Km

Aqueous Urea Solution 32.5% that is used with the Selective Catalytic Reduction system (SCR) to reduce emissions of oxides of nitrogen from the exhaust of diesel vehicles

I drive (at work ) a 12L  6 cyl bus that does 52L/100Km and uses Add Blue at a rate 3L/100Km

Your 6.6L is using a lot less in comparison even taking into account the difference in engine displacement.

Maybe a call to a Holden dealer service dept may be able to give you a figure of what the usage should be for your vehicle.

Aus Kiwi is right that if you run out of Add Blue your Silverado will go into limp mode

Cheers

Vince

-- Edited by Vince on Saturday 23rd of July 2016 01:48:41 PM