How long are your track sessions? Are they the same now as in the summer?
Couple of things that I can think of.
1. Air flow restriction. Check the cooler if there is anything covering it. Blow air through the fins backwards. If anything is stuck in the fins. This should help in removing it.
2. Thermostatic plate failing. Never heard of one failing to open, but there is always a first time. Would have to change to a new plate to find out. But it works ok on the street. So I don't think it would be this.
3. Your track sessions have gotten longer, and you never noticed.
4. You now have reached the point where you need to up-grade.
Last edited by Rusty; 10-16-2017 at 09:42 PM.
|