Where to get Zerex G-05? - PeachParts Mercedes-Benz Forum

okto · #1 02-08-2011, 11:57 PM

I have never seen it in any auto parts store. Pep Boys, AutoZone, Advance, none of 'em.
What stores do y'all know that carry Zerex?

alabbasi · #2 02-09-2011, 12:02 AM

They usually sell it at Napa but if you're running a diesel with a cast iron engine then I doubt that you need it.

glenlloyd · #3 02-09-2011, 12:11 AM

My local NAPA (warehouse location) has the concentrate and the pre-dilute in stock for about $12 / gallon. AFAIK it's the only place in town that carries it.

sjh · #4 02-09-2011, 12:12 AM

Quote:

Originally Posted by alabbasi

They usually sell it at Napa but if you're running a diesel with a cast iron engine then I doubt that you need it.

Why so?

Just curious.

Thanks.

okto · #5 02-09-2011, 12:21 AM

It's designed to prevent corrosion in aluminum cooling system components. My radiator and engine head (OM606) are both aluminum, so I needs it.

alabbasi · #6 02-09-2011, 12:26 AM

As far as I understand, it's a fairly new chemistry that was developed for use on newer Ford, MB and Chrysler engines to combat corrosion in all alloy engines. As diesel engines are cast iron, I don't think this particular chemistry offers any benefit.

However, I'm not a chemist, anti freeze expert or diesel engine expert so others may be able to provide a more qualified opinion.

thatguy · #7 02-09-2011, 12:42 AM

Quote:

Originally Posted by alabbasi

As far as I understand, it's a fairly new chemistry that was developed for use on newer Ford, MB and Chrysler engines to combat corrosion in all alloy engines. As diesel engines are cast iron, I don't think this particular chemistry offers any benefit.

However, I'm not a chemist, anti freeze expert or diesel engine expert so others may be able to provide a more qualified opinion.

The cooling system does contain aliminum parts so I use G-05 for that reason, or the Mercedes Gold, or even Pentosin.

OP, I too have found it at every Napa in my area, O'Rilley's also carries it where I live.

okto · #8 02-09-2011, 12:51 AM

Quote:

Originally Posted by alabbasi

As diesel engines are cast iron, I don't think this particular chemistry offers any benefit.

As I mentioned, many of our engines are NOT all cast iron. All of the 60x engines have aluminum heads.

okyoureabeast · #9 02-09-2011, 12:54 AM

NAPA sells it. In fact if you're anywhere near Erie PA, every gas station sells it.

pawoSD · #10 02-09-2011, 01:11 AM

Around here its just NAPA that carries it....and the MB dealer.

It should be used no matter what MB you have, there are numerous aluminum components throughout the cooling system.

SirNik84 · #11 02-09-2011, 01:16 AM

Quote:

Originally Posted by alabbasi

As far as I understand, it's a fairly new chemistry that was developed for use on newer Ford, MB and Chrysler engines to combat corrosion in all alloy engines. As diesel engines are cast iron, I don't think this particular chemistry offers any benefit.

However, I'm not a chemist, anti freeze expert or diesel engine expert so others may be able to provide a more qualified opinion.

You sound like me...... before I had to replace my aluminum radiator.

not sure the year, but around 1980 MB started using aluminum radiators with plastic tanks... when they corrode they will leak. My radiator died slowly, and I was running hot for over a year trying to find the leak... replaced the radiator and all was solved. The seams between the plastic tanks and the aluminum were very corroded.

less then a year later my head gasket failed... Looking back, running hot for a year surly didn't help the situation.

okyoureabeast · #12 02-09-2011, 01:48 AM

Quote:

Originally Posted by SirNik84

You sound like me...... before I had to replace my aluminum radiator.

not sure the year, but around 1980 MB started using aluminum radiators with plastic tanks... when they corrode they will leak. My radiator died slowly, and I was running hot for over a year trying to find the leak... replaced the radiator and all was solved. The seams between the plastic tanks and the aluminum we very corroded.

less then a year later my head gasket failed... Looking back, running hot for a year surly didn't help the situation.

This has me worried as I was noticing heating problems earlier this year.

How much hotter were you running?

thatguy · #13 02-09-2011, 02:04 AM

Op you can use Pentosin long-life instead of G-05, I've used it in many, many diesels over the years and just went to G-05 this year becuase I found it on sale when I was due for a flush. If you want to spend a little more, just head to the Mercedes dealer and get the gold stuff.

SirNik84 · #14 02-09-2011, 02:07 AM

Quote:

Originally Posted by okyoureabeast

This has me worried as I was noticing heating problems earlier this year.

How much hotter were you running?

around 90ish in the winter and 105ish in the summer. (hovering around the 100 mark) never in the danger zone, but once the new radiator was in it was at 80 degrees 90% of the time and then only fluctuating by about 5 degrees

degrees C of course.

now with the manual trans it runs between 70ish and 80

Ni! · #15 02-09-2011, 04:30 AM

Quote:

Originally Posted by okto

It's designed to prevent corrosion in aluminum cooling system components.

So the thermostat housing, radiator, heater core and CC servo are not aluminum?