That was Advance. Looking at RockAuto explains it better.
1991170° Alternate
180° Alternate
192° Recommended OE
195° OE
1994170° Alternate
180° OE
192° Recommended OE
195° Alternate
So it looks like 192° is the winner.
Stuff like that confuses Advance since they don't sell a 192°, lol. I'll just go with the 195° then. What's 3°? I'll stock up on a couple 192° for later while they still sell them.
Maybe in the deep south and summer desert you might run a 180°. She's a hot car and likes it hot with a fan running.
I didn't notice it before because it was hot outside. Now that it's cooler out the 1994 temp gauge is at half mast and fuel mileage took a nose dive. I gave her a complete tuneup but the thermostat must be stuck open or it doesn't have one. I'll fix that problem.