Weird Test Drive - Page 2 - Mercedes-Benz Forum

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post #11 of 19 (permalink) Old 02-15-2014, 07:57 AM
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blue smoke usually means its burning oil
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post #12 of 19 (permalink) Old 02-15-2014, 08:02 AM
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flyboy is right

If it makes you itch don't buy it. You will spend the rest of your ownership waiting for something to happen. There is a plethora of MLs.
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post #13 of 19 (permalink) Old 02-15-2014, 09:41 AM
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I'm also not a fan of having vehicles "pre-warmed" prior to a test drive. You can learn things by listening to a cold motor...and cold transmissions can reveal early issues as well.

Is there some reason you're NOT looking to import from the US? a 3-4 year old luxury car is typically a perfect candidate for some real savings....
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post #14 of 19 (permalink) Old 02-15-2014, 12:47 PM Thread Starter
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Originally Posted by E50Canuck View Post
I'm also not a fan of having vehicles "pre-warmed" prior to a test drive. You can learn things by listening to a cold motor...and cold transmissions can reveal early issues as well.

Is there some reason you're NOT looking to import from the US? a 3-4 year old luxury car is typically a perfect candidate for some real savings....
I was under the impression Mercedes Canada try to make it very difficult to import.
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post #15 of 19 (permalink) Old 02-15-2014, 01:29 PM
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Today the salesman wrote:

"Last week they took the ML in for service and the technician put fuel conditioner in the tank. The next step is then to fill the tank for it to mix with the conditioner. The tank did not get filled and the blue smoke was the conditioner burning off. No issue with that happening."
I suspect what they put in was a can of Techron - a FI cleaner. The instructions on the can are to add it into a low tank, and then fill the tank with fuel afterwards.

In my CLK Service booklet, MB state: Do not use fuel additives. These could lead to increased wear and damage to the assemblies. If you use additives your warranty entitlement could be restricted.

So I am vey surprised to hear that a MB dealership uses these products - unless this M272 engine is very different to my M112.
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post #16 of 19 (permalink) Old 02-15-2014, 08:10 PM
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Auto manufacturers have changed their policies many times over the years. I would call Mercedes Canada and ask what the current policy is on importing vehicles from the US, then call the dealer you plan to service the car at to make sure the answer is consistent.

Last time I bought in the US (about 6 years ago) Benz was one of the companies that outright wouldn't honor factory warranty, even on pre-owned cars. I don't know if that's still the case, as there was some legal grey areas for them to do that.

Even still, often it was still worth bringing a car up to save $10,000 even if you had to spend $4000 on a quality aftermarket warranty, or just save the $10,000 for repairs over the long run.
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post #17 of 19 (permalink) Old 02-26-2014, 06:41 AM
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"Last week they took the ML in for service and the technician put fuel conditioner in the tank. The next step is then to fill the tank for it to mix with the conditioner. The tank did not get filled and the blue smoke was the conditioner burning off. No issue with that happening."
What did the fuel gauge read?

I've run diesels (old low tech stuff, not an advanced TDi) with massive amounts of both fuel conditioner and injector cleaner. Never any blue smoke. Black, grey and white, but never blue.

Blue is indeed oil burning.

Importing an MB from the US is very simple and straightforward, I've brought a bunch of them up.
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post #18 of 19 (permalink) Old 02-26-2014, 08:02 AM
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I suspect what they put in was a can of Techron - a FI cleaner. The instructions on the can are to add it into a low tank, and then fill the tank with fuel afterwards.

In my CLK Service booklet, MB state: Do not use fuel additives. These could lead to increased wear and damage to the assemblies. If you use additives your warranty entitlement could be restricted.

So I am vey surprised to hear that a MB dealership uses these products - unless this M272 engine is very different to my M112.
When I used to do service A and B in the dealerships, they used to add fuel additive in Service A and B. Not sure if they still do this. It was a MB branded bottle and I was charged for it, of course.
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post #19 of 19 (permalink) Old 02-26-2014, 01:57 PM
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If you buy that car you will worry about this experience for all the time you have it. It is not worth the aggravation; buy another car. By the way, I, too, would be worried about the "pre-warmed" demonstration drive.
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