I used a locktite product that I thought was total BS.
I was installing a brass bodied sensor into a cast aluminum engine head.
I was TOLD there would be a chemical reaction between the brass,
aluminum, and locktite. I expected something like epoxy when cured.
I coated the threads, torqued the sensor, and waited for it to cure. I
checked the next morning, the locktite was as wet as ever, and I wiped
it off with a paper towel. I then placed a small heat lamp above the
engine, thinking heat would help.
I checked again about ten to twelve hours later, thicker, but still goopy.
Thinking this was a total scam, and I was screwed, I tried to remove the
sensor so I could use something else. Sure enough, the locktite had
cured, and was rock-hard, like cured epoxy, in the threads, where the
brass, and aluminum came together.
I cleaned everything up, and re-installed, this time waiting the
required time, and used solvent to remove the excess goopy locktite.
I never had an issue with the sensor leaking, even when that particular
engine over-heated later.
Kurt
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