VG30DETT headgasket sealer question

[yoozef]

He, i got a 1990 300zx TT and i get a slight white smoke out of the tailpipes and sometimes a loss of power, usually when i first start the car in cold weather (i got it a month ago, so havn't had a chance in warmer weather). Sometimes it'll run like a champ, but ocassionally it looses power and runs really rough. Im pretty sure it's the head gasket, but i dont have the funds to fix that right now. I was looking at this stuffhttp://www.crcindustries.com/a....aspxDoes anyone have any experience with this stuff? If not, whats the best stuff to use? Thanks in advance for any input
Modified by yoozef at 5:35 PM 2/17/2007

[nsrZ32]

Don't use that!

Fix it properly with a new head gasket. Just save your money and wait and do it right the first time.