Methyl hydrate in the tank? - PeachParts Mercedes-Benz Forum

jassz · #1 04-14-2003, 03:54 PM

We are currently in the process of doing some repairs on a 300td. They will probably happen over an extended period of time as the car has multiple problems (which is better than multple personalities:p ), and we have limited time available. I don't want to introduce another problem--water condensation in the tank-- just to confuse things. We'll be confused enough

.

I know you can use methyl hydrate is gas tanks, how about diesel? Or is there a better choice?

Thanks!

Natalie

leathermang · #2 04-14-2003, 11:37 PM

I have never heard of using this stuff in gas tanks...

http://www.vaxxine.com/hyoomik/images/technique1.html

but I have heard of putting alcohol into the tank , which mixes with the water, and then disolves in the fuel...

This site seems to equate the two... except that the Hydrate is more poisonous...

http://www.recochem.com/cdnav/cdprohsfaq.htm

And it may be more expensive than plain old alcohol.....

jassz · #3 04-14-2003, 11:49 PM

Quote:

And it may be more expensive than plain old alcohol.....

No, not unless you buy the good stuff.

It's pretty cheap, and it is an alcohol (or at least alcohol-ish :p ) I've heard a number of people recommend it for water or ice in the gas tanks/lines, including the guy at the automotive store. But the label says it's for camp fuel. I think it's the hydrate part of it that makes it absorb water so well.

But, obviously it's not a well known method. Maybe I'll try a little in the tank (probably can't hurt, since I've used in gas tanks) and use the rest to get my ink flowing again (as per your link)

I'll let you know if I self destruct.

leathermang · #4 04-14-2003, 11:52 PM

"probably can't hurt" Famous Last Words....

rwthomas1 · #5 04-15-2003, 10:51 AM

There are diesel specific products to remove water and maintain diesel fuel systems. I have no idea what methyl hydrate will do to injection pumps and injectors but I don't want to find out either. Strongly recommend you stick with water-removal additives that are designed for diesels. Price an injection pump and injectors and you will understand. RT

#6 12-06-2007, 08:47 AM

I have an 1986 300sdl and the injection pump had to be rebuilt because it was rusted from water in the diesel fuel. How come my Benz doesn't have a filter to remove the water? My 1982 Toyota diesel truck does and so does my 2004 Jetta!

#7 12-06-2007, 09:22 AM

Add a biocide and fill the tank to the brim to prevent condensation.

The stock filter does remover water, just not very well. If you think you need one to keep out water, 1- You need to find a different fuel source and 2- add one. They are commonly available, cheap and easy to install.

vstech · #8 12-06-2007, 10:07 AM

Quote:

Originally Posted by djoyce93

I have an 1986 300sdl and the injection pump had to be rebuilt because it was rusted from water in the diesel fuel. How come my Benz doesn't have a filter to remove the water? My 1982 Toyota diesel truck does and so does my 2004 Jetta!

the spin on filter is a water separator too...

P.E.Haiges · #9 12-06-2007, 11:48 AM

dejoyce93,

Older MB Diesel engines, circa 1960s, had a different type of fuel filter. It was a hard aluminum case with removable top and replaceable fuel fliter inside. On the bottom of the filter case was a plug that could be removed to drain out any water. I always wondered why MG discontinued using that type of filter.

Sometimes things don't get better.

P E H