thats normal for the ARP stuff,,,,but i have had nothing but trouble with it, both myself and several people i race with all have the same complaint... it SUCKS.....everytime ive used it to seal head studs it leaks, others have had the same problem. it seem no matter how much you use it still leaks.....i went back to the plain old permatex stuff and havnt had a problem since.....btw ive never tired it on a turbo car but i would expect the same results..........goodluck!!!