Head gasket patch is what you use to get the vehicle sold.
They don't work.
It's more of a temporarily repair till you can get it fixed right. This head gasket rear stuff doesn't stop the leak, it just slows it down.
Not fixing a bad head gasket as soon as possible will lead to cylinder wash down with coolant, which will taper it, then after you fix it you will be burning oil.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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