Anyone use GM top end cleaner ???

[MOLON LABE]

I have a 1990 GMC Suburban 4x4 1500, 5.7 TBI
I have heard of people using GM top end cleaner as preventative maintenance and for certain problems.
Any thoughts on this and is it worth it to use it ?
Also, how would you use it on my particular vehicle ?

 

[1979jimmy350]

just go to the store and but seafoam it is the same thing, it really helps clean out the carbon in the intake tract

 

[JIM88K5]

I have use both the spray & the pour type. Both work well.

 

[theperfectgarage]

just go to the store and but seafoam it is the same thing, it really helps clean out the carbon in the intake tract

Is it the same ? I have always believed GM's was a superior product. Same with EOS, that always gets dumped in my new rebuilds.

 

[MOLON LABE]

So whats the best way to use it in my vehicle ?
Run it through a vacuum hose etc...??

 

[JIM88K5]

Pour it in the carb/tbi until it stalls and let it sit for 15 min. Fire it up pour the rest in, then you done.

 

[Diesel Dan]

It's been years since I've used top engine cleaner. But one thing comes to mind....smoke screen! Only thing I've seen smoke more was a Grand National on a road trip to burn the oil out of the exhaust after a turbo swap. Definetly seems too work. I also use EOS on all engine assemblies.

 

[zeroz400]

I thought GM stopped making that stuff? Maybe they just removed some chemicals. We used it on a couple of friends cars and trucks, smoothed out the idle and small improvement in mpg. Good stuff.

Last year my Auto class ordered a whole bunch of that stuff because it was supposed to be discontinued, anyone got any info on this?

 

[5280k5]

As far as I know it's still available, we've used it at the dealership for years.
You can pour it in the carb or throttle body like jim88k5 said, or pull off a vacuum hose w/manifold vacuum and suck it into the intake that way. we used to mix it 3=1 with gas and run it through injector cleaning canisters. most recently GM has had us filling cylinders and doing decarbon soakdowns , either way you use it Good stuff. oh yeah & enjoy the smoke show spy hunter anyone lol!!!