26-01-2021, 01:57 PM
(This post was last modified: 26-01-2021, 01:58 PM by Steve Jones.)
(26-01-2021, 12:01 PM)mopetta Wrote: I just bought a Loctite 5990. The small text on the packing says "not recommended for head gaskets". Maybe its more related to modern gaskets...
I've lost count of the number of times I've answered this point.
It was first developed at the request of GM who wanted to eliminate the use of head gaskets and asked Loctite to develop an alternative. They tried but it didn't work. So, it is not recommended for use INSTEAD of a head gasket. In conjunction with one is a different matter and it's the preferred option for many in the old car world and also in the wider competition world.
When this subject comes up it always generates a mix of supportive and negative comments. The simple answer is if you're not happy using 5990, don't. Just let the rest of us get on doing things our way.
Steve