Worth every penny. Used on my corolla with 2300k and WOW what a difference.

 

the vacuum line attached to the brake booster... stuff the line in the can turn the car on and the can upside down... run for a minute or so till the can is empty, and turn the car off. let it sit for an hour or so, ( know it only needs 5 minutes but an hour provides the best clean) then crank it and run it till the smoke blows out. *THIS IS THE MOST IMPORTANT PART* once the smoke blows out, change your oil, all of the filth that was left is now sitting in the oil and will get right back where it was.

 

I've always heard the brake vacuum line, just want to make sure it gets everywhere evenly. I'll probably do this before my next oil change then.

 

if you want to ensure it gets in there good, get 3 bottles. pour on in your gas, 1 tank before the oil change, 1 in the oil a day before the oil change, and one in the vac line an hour before.


Thats what I do when I buy a used car. cleans everything.