Which engine coolant?
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
what year/model car and which engine? IIRC, they changed coolants part way through the W212
this page explains the coolant categories, MB-Approval 325.x is concentrate, MB-Approval 326.x is ready-mix. and if you mix the concentrate, it gives the specs for the water (can't be too hard, etc... always safest to use distilled water).
the 320.1 link here is a PDF listing which standards for what engines, mostly its 32x.0 or 32x.6. same URL has the listings of approved 32x.0 and 32x.6 products. you can upgrade a .0 car to the .6 coolants after first fully flushing the cooling system (in other words, don't mix!)
The .0 stuff is known generically as G48, and is dark blue.
the .6 stuff is known generically as G40, and is purple.
In the USA, Zerex G48 and G40 concentrate is probably the easiest to find, but this will still be special order at most parts chains, and its NOT the old school gold Zerex G05 you can find everywhere (Mercedes used that stuff back in the 90s)
this page explains the coolant categories, MB-Approval 325.x is concentrate, MB-Approval 326.x is ready-mix. and if you mix the concentrate, it gives the specs for the water (can't be too hard, etc... always safest to use distilled water).
the 320.1 link here is a PDF listing which standards for what engines, mostly its 32x.0 or 32x.6. same URL has the listings of approved 32x.0 and 32x.6 products. you can upgrade a .0 car to the .6 coolants after first fully flushing the cooling system (in other words, don't mix!)
The .0 stuff is known generically as G48, and is dark blue.
the .6 stuff is known generically as G40, and is purple.
In the USA, Zerex G48 and G40 concentrate is probably the easiest to find, but this will still be special order at most parts chains, and its NOT the old school gold Zerex G05 you can find everywhere (Mercedes used that stuff back in the 90s)
Last edited by Left Coast Geek; Oct 16, 2022 at 04:40 PM.
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From: WA State, USA
2014 Cummins, 2014 E250 Bluetec
what year/model car and which engine? IIRC, they changed coolants part way through the W212
this page explains the coolant categories, MB-Approval 325.x is concentrate, MB-Approval 326.x is ready-mix. and if you mix the concentrate, it gives the specs for the water (can't be too hard, etc... always safest to use distilled water).
the 320.1 link here is a PDF listing which standards for what engines, mostly its 32x.0 or 32x.6. same URL has the listings of approved 32x.0 and 32x.6 products. you can upgrade a .0 car to the .6 coolants after first fully flushing the cooling system (in other words, don't mix!)
The .0 stuff is known generically as G48, and is dark blue.
the .6 stuff is known generically as G40, and is purple.
In the USA, Zerex G48 and G40 concentrate is probably the easiest to find, but this will still be special order at most parts chains, and its NOT the old school gold Zerex G05 you can find everywhere (Mercedes used that stuff back in the 90s)
this page explains the coolant categories, MB-Approval 325.x is concentrate, MB-Approval 326.x is ready-mix. and if you mix the concentrate, it gives the specs for the water (can't be too hard, etc... always safest to use distilled water).
the 320.1 link here is a PDF listing which standards for what engines, mostly its 32x.0 or 32x.6. same URL has the listings of approved 32x.0 and 32x.6 products. you can upgrade a .0 car to the .6 coolants after first fully flushing the cooling system (in other words, don't mix!)
The .0 stuff is known generically as G48, and is dark blue.
the .6 stuff is known generically as G40, and is purple.
In the USA, Zerex G48 and G40 concentrate is probably the easiest to find, but this will still be special order at most parts chains, and its NOT the old school gold Zerex G05 you can find everywhere (Mercedes used that stuff back in the 90s)
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
The 320.1 pdf lists all the modern engines and which coolant specs. If your car has blue, then it's 325.0 or 326.0, if it's violet, it's 325.6 or 326.6
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what year/model car and which engine? IIRC, they changed coolants part way through the W212
this page explains the coolant categories, MB-Approval 325.x is concentrate, MB-Approval 326.x is ready-mix. and if you mix the concentrate, it gives the specs for the water (can't be too hard, etc... always safest to use distilled water).
the 320.1 link here is a PDF listing which standards for what engines, mostly its 32x.0 or 32x.6. same URL has the listings of approved 32x.0 and 32x.6 products. you can upgrade a .0 car to the .6 coolants after first fully flushing the cooling system (in other words, don't mix!)
The .0 stuff is known generically as G48, and is dark blue.
the .6 stuff is known generically as G40, and is purple.
In the USA, Zerex G48 and G40 concentrate is probably the easiest to find, but this will still be special order at most parts chains, and its NOT the old school gold Zerex G05 you can find everywhere (Mercedes used that stuff back in the 90s)
this page explains the coolant categories, MB-Approval 325.x is concentrate, MB-Approval 326.x is ready-mix. and if you mix the concentrate, it gives the specs for the water (can't be too hard, etc... always safest to use distilled water).
the 320.1 link here is a PDF listing which standards for what engines, mostly its 32x.0 or 32x.6. same URL has the listings of approved 32x.0 and 32x.6 products. you can upgrade a .0 car to the .6 coolants after first fully flushing the cooling system (in other words, don't mix!)
The .0 stuff is known generically as G48, and is dark blue.
the .6 stuff is known generically as G40, and is purple.
In the USA, Zerex G48 and G40 concentrate is probably the easiest to find, but this will still be special order at most parts chains, and its NOT the old school gold Zerex G05 you can find everywhere (Mercedes used that stuff back in the 90s)
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
I don't know when they stopped putting blue (325.0, G48) in and switched to purple (325.6, G40). Look at what is in your overflow tank.
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MBWorld Fanatic!
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
the gold (G05) is good for 3 years, the blue (G48) is 5 years, I think. G05 and G48 are compatible. tjhe newest spec is the pink G40 stuff thats even longer life, that requires a thorough rinse/flush before changing from an earlier fluid.
I believe Mercedes switched to G40 circa mid MY 2014.
I believe Mercedes switched to G40 circa mid MY 2014.
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From: Gulf Coast
2014 Mercedes-Benz E350
the gold (G05) is good for 3 years, the blue (G48) is 5 years, I think. G05 and G48 are compatible. tjhe newest spec is the pink G40 stuff thats even longer life, that requires a thorough rinse/flush before changing from an earlier fluid.
I believe Mercedes switched to G40 circa mid MY 2014.
I believe Mercedes switched to G40 circa mid MY 2014.
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
As I understand it, the water pump is a major project on a m276 engine
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From: Gulf Coast
2014 Mercedes-Benz E350
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Well all my previous cars, I've only replaced the water pump when the shaft seal starts to weep. And those cars had water pumps that were a lot easier to change. I change the radiator on much the same. Thermostat with new water pump.
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From: Gulf Coast
2014 Mercedes-Benz E350
That's why that job is on the back burner, I need to change intake camshaft adjuster, spark plugs, transmission service, diff. oil. Soon as doc releases me 22 of May, and I get stamina back, I'm a busy boy. I may need to pay someone for the Cam Adjuster, It doesn't make noise all the time, once in a while, you can cold start, at first it's quiet then a dull clacking a couple seconds then quiet again. Sounds like Drivers side intake. Got sample bottle for Blackstone testing oil coming.
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here's a nicely done how-to on swapping the water pump on a M276.
https://www.leighsr.com/coolant-pump-replace-m276 ... factory says 3 hours labor, but thats for someone trained who does it all the time, it would probably take me twice as long as I would be extra careful about each step.
https://www.leighsr.com/coolant-pump-replace-m276 ... factory says 3 hours labor, but thats for someone trained who does it all the time, it would probably take me twice as long as I would be extra careful about each step.
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From: Gulf Coast
2014 Mercedes-Benz E350
here's a nicely done how-to on swapping the water pump on a M276.
https://www.leighsr.com/coolant-pump-replace-m276 ... factory says 3 hours labor, but thats for someone trained who does it all the time, it would probably take me twice as long as I would be extra careful about each step.
https://www.leighsr.com/coolant-pump-replace-m276 ... factory says 3 hours labor, but thats for someone trained who does it all the time, it would probably take me twice as long as I would be extra careful about each step.
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while you're in there, unplug and inspect the connectors to the camshaft actuators. apparently early M276 camshaft things are prone to an oil leak, that leak gets into the wiring harness and can migrate all the way to the ECM and then get into the ECM, destroying it. if caught early, you don't need to replace the harness, just install these isolators (basically a properly sealed plug and jack on a short pigtail). Later M276's have camshaft things that dont' leak.
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From: Gulf Coast
2014 Mercedes-Benz E350
while you're in there, unplug and inspect the connectors to the camshaft actuators. apparently early M276 camshaft things are prone to an oil leak, that leak gets into the wiring harness and can migrate all the way to the ECM and then get into the ECM, destroying it. if caught early, you don't need to replace the harness, just install these isolators (basically a properly sealed plug and jack on a short pigtail). Later M276's have camshaft things that dont' leak.
