my friend ran seafoam through his cherokee said it made everything better. idle, response, smoother. should i do it to does it realy help alot. just in the throtle body and gas tank not in oil? ive been burnin a little oil to so i probly have biuld up?

 

Shouldn't hurt.

 

Do it. I've heard stories of problems when putting it in crankcase. Some people claim to have knocked something loose that sludge was holding together and messing the engine up entirely or seafoam springing oil leaks. However, MOST that I read had zero problems with putting it in the oil. I did so and had no problems at all. Didn't see any improvements either however.

On the other hand, you can only benefit from putting it in the gas tank and the vacuum line from the brake booster to the intake manifold

 

I run it right before I change my oil if you really have bad build up. You don't wanna keep seafoam in for 3000 miles . Could be with that nock your talking about is one of your rods are loose . Mostly I perfer seafoam I use in my intake and oil but only when its time . If you do it in the oil run it for about half the day running around town you will be amazed what comes out and maybe try a different weight oil like a 10 40 or 10 30 with some motor honey

 

If you read the bottle it says not to drive with the SEAFOAM just idle with it. Because it thins the oil out to almost water type. No viscosity. I run it everytime I change the oil in my jeep. 1 through the intake and 1 in the tank. makes a world of difference.

 

Horse malarkey.

"To clean built-up oil residues and contamination from the crank case, add 1½ oz. Sea Foam to each quart of engine oil. Sea Foam will slowly re-liquefy residues and suspend contaminants for easy removal. Monitor oil for color and clarity and change oil and replace filter when oil looks dirty."

http://www.seafoamsales.com/how-to-u...treatment.html

 

You can drive for up to a few hundred miles safely with Seafoam in the crankcase. But after that, it should be changed.