anybody know if this will cause damage?

a freind of mine asked me if it was any good after he already put it in. Ive always been of the opinion you cant buy a mechanic in a can. anyone have success with this?

http://www.autobarn.net/blue-devil-engine-and-cooling-sealant.html

__________________

1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

This product sounds great but you are correct sir you cannot buy a mechanic in a can. This might work for a while as will most radiator stop leaks but most of them will clog at least the heater core some will clog the radiator as well. I have used them in the past and they have held up for a few years other products I have used just clogged the crap out of the radiator and I had to replace it. Hope your friend has good luck.

I hope so too. The cars not worth the 1800 he was quoted to replace the head gaskets, hopefully it will last a year or two

__________________

1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

Yes. It will plug passages in the radiator and heater core.