SVTBill

about 200 miles ago i put some seafoam in my crank case...just changed the oil 0.0 miles ago, now im putting it in my vacuum line....will i need to change my oil again? and why is it not smoking?

sitnlopro99gt

if its not smoking you didn't put enough......I'm sure you know you should do seamfoam before oil change which seems like you did I never did it the other way around I'm not sure what the affects would be.....

8banger

I think that stuff works alot like the GM Top Engine Cleaner I use at work....Stick the vaccum line down in the Can...while the engine is running,keep at around 2500 rpm(engine will run abit ruff),let it get to the bottom of the can and before it reaches the bottom,,shut the engine off and let it set for 10 to 15 mintues....Then after that,,start it up and blow it out (take it for a good drive)....It will smoke...no need to change oil again...really does a good job,,decarboning the valves andpiston tops...