Re: [Chevelle-list] sludge in motor

[Chevelle70SS454c]

Kyle,
I would recomend Gunk 5 minute flush. Pour it in with the old  oil and let it 
idle for 5 minutes. Then, change the oil. I would not do much  more then this 
to clean the sludge out because you may encounter other problems.  It is a 
fact that the sludge is indeed stoping gaskets from leaking. By cleaning  and 
flushing the motor to much you will start seeing oil leaks that you did not  
have before.
Ken