[Whaler]

Hi guys thanks for the input...I had a closer look at the 160 and see it already has a small hole at the valve seat edge. It looks to be about 1/8" and I can only see half of it as the other half is covered by the closed valve.

So can I assume 180 is better then?

The 160 would open that much sooner and the the car would not likely warm up as it initially should??

I thought the 180 was the more common application myself, was only concerned about putting it in now, only to tear it apart later for the correct thermostat application.
My oldtimer tossed me the 160 thinking it wa 180 anyhow..I will simply return and exchange it..

I will look for some of that permatex as well

Thnaks

Tim