How much KW Sealer should we use? is the 16oz can enough for a chevy s-10 dual core radiator? Our truck over heated on my son christmas blew head gasket and was blowing white smoke.
One mechanic said to replace the intake manifold and radiator, a friend is helping fix it doesn’t think the intake manifold is bad so far we did head gaskets & bolts a water pump, spark plugs and new radiator after a oil & filter change we still have oil that is milky.
He wants to do a compression test but I cant drive it there with out making it worse will this fix that? Or should I wait and have the heads shaved and a new gasket set
I am running on empty cash wise this month and really need wheels right now but will wait if driving it will put it further in the hole any advice would be greatly appreciated
thank you for your time
The 1 can of K&W Block Sealer is plenty for your vehicle. You will need to be able to start and run the engine for the sealer to work though. So if you have lots of water/coolant dumping out of the tailpipe where the engine will not stay running, the sealer will not work.
If you can get the engine to start and stay running, then use the sealer as I described on this site…not as per instructions on the can.
My tried and true instructions for KW Block Sealer are:
1. Empty ALL coolant from the engine, radiator as best you can – sealer will not work with coolant.
2. Pour contents of the can in a bucket, mix in plain tap water into bucket and stir contents.
3. Pour contents of the bucket into the radiator and top off with plain tap water.
4. Run the vehicle for 500 miles total drive time. You don’t have to drive 500 miles all at once, but the faster you put those miles on the better.
5. After 500 miles, drain out radiator and fill up with 50/50 water coolant mix and pray that it worked. That is all, I don’t take out the thermostat or anything else. We have had a 80% success rate on 100′s of cars in our shop.
Warning – You will NOT have BOIL OVER or FREEZE protection during those 500 miles so make sure to keep the engine and radiator from freezing.
Category: Head Gaskets