Hi, I hope to be welcome in the forum, I am the happy owner of a 3341 zetor super, D, of which I am very happy, I have a problem lately, engine temperature and slow to catch up to get 4, 5 in the cold impossible, to be hot the problem is minor, but not resolved, whereas in 1.2, and 3 tractor up the field is very strong in 4 and 5 is as if oil was left with, that can happen? thank you very much