mjs1012

I swapped from the factory 190 t stat to the sure-cool last summer, and while it was great in the warmer months, in the winter it struggled to get to 100-110F, especially on the highway. It would shift pretty rough for a few minutes and based on this, I'm planning on putting in the newer thermostat to help improve cold weather performance. On another note, does anyone have the part numbers for the cooler line o rings? I lost one when I did the sure-cool swap and used a random o ring that fit but would like to get new ones just to have in case.