Ford TA-31 grey silicone...02 sensor safe?

[66glide]

Is this stuff sensor safe?

[Keith Browning]

Well it IS silicone right? What are you sealing?

[Jeff_E]

I use it for everything and haven't had any problems with contaminated O2 sensors. But even if I had to replace the occasional O2 sensor it would still be worth it.

[66glide]

Well it IS silicone right? What are you sealing?

I seal EVERYTHING with it because it is absolutely the best silicone I have ever used!

[batmantech]

TA-357 is for 3.5 and 3.7 engines its a lot like it

[66glide]

TA-357 is for 3.5 and 3.7 engines its a lot like it

I have a tube of it, but have not tried it yet.

[Jeff_E]

TA-31 doesn't ever seem to become hard and start leaking like all of the black silicone variants seem to do after a few years. 

 

The only time I've ever had to do a factory installed 7.3 oil pan, was because the pans themselves rusted out. With properly prepared surfaces, TA-31 is a lifetime silicone in my opinion.

 

The engineers aren't just afraid of O2 sensor contamination though, they seem to have a fear of oil foaming. I'm less fearful of such things... Perhaps when they can build a half decent door latch I'll start to care what they think.

[Keith Browning]

Who needs door latches when you can hold the door closed with TA-31? Nice large bead all around the door. Try to get that door open after it cures I dare ya! 

[DieselD]

I absolutely love the TA-31 silicone ever since discovering during the 7.3 days. I use it for everything! and I mean everything! I once plugged up a hole in the shop wall that was pouring water in from a rain storm that had flooded the drainage ditch next to the building! 

[Keith Browning]

I put that shit on everything!

[forddieseldoctor]

I put that shit on everything!

You like the taste eh?

[66glide]

TA-357 is for 3.5 and 3.7 engines its a lot like it

Just WAAAY more expensive than T31.

[Jeff_E]

Isn't TA-357 what they used from the factory? 

 

If it is, I'm not impressed.