read somwhere on this forum that TA 30 was used to re seal intake plemems on our trucks. but i just ordered mine and got it in the mail and it says on the back used on all engines (exept the 7.3 powerstroke diesel)? anyone know why or has anyone tried useing it on the 7.3s?

 

You need TA-31

 

Hmmm figures! the post I read said that TA30 was for our intake plenems and TA31 was for pretty much everything elts? What's the difference between the 2 that makes the TA30 not compatible with the 7.3?

 

TA-31 should be used on anything that is contacting oil on these engines b/c regular RTV will cause the oil to foam. With that said, you don't have to worry about that on the intake plenums, but TA-31 is incredibly strong stuff and is why we use it on the plenums. TA-30 might work, I've never used it, but I would use TA-31 if you can.

 

WTF is TA-30 and TA-31?

 

Motorcraft RTV. Both are grey in color, but TA-30 is darker grey than TA-31.

TA-31 is diesel specific RTV to prevent foaming of the engine oil. Standard RTV does something to the detergents in the diesel engine oil that causes it to foam.

TA-30 says its for use in all engines except diesels.