GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

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Old Apr 4, 2010 | 10:27 PM
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jw1977's Avatar
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GL450
Coolant

My coolant light is on in our 07 GL450. Is this the pink or green coolant?
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Old Apr 5, 2010 | 02:35 PM
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GL450
Anyone? I looked at the resevoir and can't see any fluid. Also, I see no high or low mark on the resevoir. Am I missing it?
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Old Apr 5, 2010 | 02:39 PM
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From: Cali
2011 GL450
Originally Posted by jw1977
Anyone? I looked at the resevoir and can't see any fluid. Also, I see no high or low mark on the resevoir. Am I missing it?
My '09 has the pink/red coolant. I didn't see the high-low mark either. There is a ridge that I filled mine too as my coolant light came on as well. In the back of your owners manual there is the coolant spec's.
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Old May 4, 2010 | 03:30 AM
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Pink/ red coolant??? It's neither pink/ red or green. You need to use MB spec coolant from the dealer or aftermarket equivalent.
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Old May 4, 2010 | 09:56 PM
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2007 GL450 2005 C55 2002 C32 sold 2001 ML320 sold
You should be using Zerex G05 only for later model MBs. It protects the aluminium parts of the cooling system. I use a 50/50 mix with distilled water as i live in Chicago and change it every 3 years in all my cars.
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