Fuel system treatment/cleaner...
 

What are you guys using??I am kinda partial to a product called Seafoam,seems to work really well for gas or diesel.First time I tried it was in my M/C and had to readjust my carbs.I told a friend about it and he said that MB makes the best stuff out there,never heard about it.So what is everyone else using (if anything)?

bg 44k every 18 months or so

Red Line makes an excellent cleaner that has worked well for me.

Seafoam for me also. I have not treated the Benz, but in other cars I put some in the fuel. And for a deep clean one can for the intake. Just before an oil change I will put some in the crank case. But I put so little it probably does nothing. I just dont want to thin the oil out too much.

In the crankcase?
 

I am curious; is it designed to be both a fuel system additive AND an engine oil additive?

BG44K
 

Where do you buy this to DIY?

ebay.... i try to buy 6 at a time since we have 3 mb's

Yes. I am not a believer in "snake oil" products, but Seafoam has ben around a long time and it been proven many times to help. Since the intake manifold on my last car is easy to remove, I did so both before and after treatment. Before it was not too bad, but there was certainly oil contamination from the PCV and carbon from EGR. After treatment in the intake I took it apart and it was virtually spotless.

As for oil it does the same, but I am not a fan of thinning out the oil. Most guys run it just before a change. They add it and drive about 50 miles.

http://www.seafoamsales.com/motor-treatment.html

Seafoam
 

Thanks! I'll give it a try.

I like Seafoam too. On the gassers I pull a vacuum hose and stick it in the can, moving it up and down to keep the engine from stalling. Once I am near the bottom I let the engine suck up enough to stall, then wait about 5 -10 minutes before cranking it up. You should see the clouds of carbon that come out then! A quick drive down the highway (fogging all the mosquitoes as I drive by ;)) and the top end of the engine is clean.
I just did the Suburban the other week and now it is the Jeep's turn...

I have not tried pouring it into the crankcase, but with my engines hitting 200K miles I am very cautious about additives in the oil.

For Diesels I use the LubriMoly Diesel Purge running the engine straight off the DP. That works great too...

Hope this helps :-)

^ Bingo. Thats what you do. It also helps if you have someone on the throttle to prevent a stall out if needed. But the BIG thing, as mentioned, it the wait time after you "flood" the engine with Seafoam. I usually go a little longer at 20 minutes. The car can be a big pain to get started and usually one must rev it a bit to get it to smooth out.

IMPORTANT: Its critical the engine is FULLY warmed up before doing this.