Mend Tight Stop Leak Head Gasket Sealer??
So I just got back from Midas where I had my coolant flushed. I had it flushed because it's winter here in Wisconsin and I wanted to make sure there was no water in the engine. Low and behold, they tell me my head gasket is cracked (probably by a chunk of ice). All the symptoms are there, rough idle, coolant out exhaust, exhaust out radiator, etc. $900 to fix the damn thing, or the tech told me about "Mend Tight" leak sealer. He said he used it on his truck and has had no problems. They say it is a very small crack most likely. I searched for info on this "Mend Tight" milky sealing fluid but didn't find any info. Has anyone heard of this stuff, does it work, and is it safe? I'm always hesitant to fix a leaking problem with a liquid sealant. Thanks!
97' XJ Sport-4.0L I6, Forest Green, full-faced brushguard, (6) spotbeam headlights, 3" Rough Country w/ 3.5" Pro Comp packs, newly added magnaflow cat and dyno muffler