Good over the counter sludge remover?
 

Mechanic said I have engine sludge. Named a few brands where you pour it in the oil tank and should help thin it out or even remove it. Something like marina green or something.

Any suggestions? Is it possible? Any recommendations?

Eagle Gold engine flush. I've use it every other oil change. It does wonders. When I first bought my X, I did my flush. You should have seen the gunk that came out of the engine. I like this stuff. You should try it. Good Luck...

I found a Gold Eagle:

http://www.goldeagle.com/goldeagle/products4.htm
http://www.goldeagle.com/goldeagle/products6.htm

is it the complete oil system flush? or the engine tune up? or any of those in those links?

do you just pour it in and viola? or is there a process? if so, what is it?

thanks! this is exactly what i was asking about. :thumbup:

Yes sorry, Gold Eagle. All you do is pour it in the engine. Let the engine run for about 10 min. Then turn it off and flush your oils. What I do, is drive around the block a few times. For some reason I feel it cleans better. But that's just me. Get it, it really works...

side question - how about for knocks? or is sludge the same reason it knocks?

I've heard good things about Sea Foam but personally, I wouldn't try any of the additives. It may be strong enough to thin out the sludge but also may wear out engine seals. Just be careful when using any.

Pine-Sol

Does a good job of dissolving the gum from old gas and doesn't eat plastic or rubber parts.

"Sir, your X5 is no longer drivable. But its smells great."

JK. pine sol? ya? really? straight?

I've run it in my Jeeps before...it's oil based. More than 1 mechanic has verified this for me, I thought the same but it works. It cleans out the lifter valleys real well.

Google it.....

Are there issues with sludge in the 4.4? It seem some people use additives and some do not. I have owned 2 series BMWs for 20 years and use nothing but synthetic oil.