Replacing Thermostat and Gasket on L3200HST

[Atlanta Panther]

Should I use a sealer like
Permatex 22071 Water Pump and Thermostat RTV Silicone
or just a new gasket (16221-73270) by itself or a combination of the two

 

[Sammy3700]

I only use the gasket on any engine most slide on the mounting bolts torque the bolts to specs all should be good

 

[Anthony250f]

I was curious about the same. The WSM for my tractor says to use sealer with almost everything. Even the water pump!

 

[Atlanta Panther]

To add to the question...went to the workshop manual and it says,
" Thermostat Assembly 1. Remove the thermostat cover mounting screws, and remove the thermostat cover (1). 2. Remove the thermostat assembly (3).

(When reassembling)
• Apply a liquid gasket (Three Bond 1215 or equivalent) only at the thermostat cover side of the thermostat cover gasket (2). What does this mean?
• Apply a liquid gasket (Three Bond 1215 or equivalent) to the water flange 1 (4) and flange 2 (5) "

So looking up on Amazon I find:
Threebond Of America Rtv Silicone Gray Eng Sealer Tb1215
and it says in the description:

• Liquid gasket
• Use in fits Case to fits Case Where NO GASKET is used

The WSM and the description seem to be in conflict.

What should I do? Thoughts?

BTW, I also found that
LocTite/Permatex #599 Ultra-Grey and 3M T-3 Silicone (black) #08670 are both equivalents to Threebond 1215.

 

[RedTailHawk]

To add to the question...went to the workshop manual and it says,
" Thermostat Assembly 1. Remove the thermostat cover mounting screws, and remove the thermostat cover (1). 2. Remove the thermostat assembly (3).

(When reassembling)
• Apply a liquid gasket (Three Bond 1215 or equivalent) only at the thermostat cover side of the thermostat cover gasket (2). What does this mean?
• Apply a liquid gasket (Three Bond 1215 or equivalent) to the water flange 1 (4) and flange 2 (5) "

So looking up on Amazon I find:
Threebond Of America Rtv Silicone Gray Eng Sealer Tb1215
and it says in the description:

• Liquid gasket
• Use in fits Case to fits Case Where NO GASKET is used

The WSM and the description seem to be in conflict.

What should I do? Thoughts?

BTW, I also found that
LocTite/Permatex #599 Ultra-Grey and 3M T-3 Silicone (black) #08670 are both equivalents to Threebond 1215.

Curious if you got any resolution on this…