[FRS Justin]

If 95% of the oil in the cooler is not flowing then 95% of the problem is not the oil cooler because only 5% is going through and it would have to be artic temp to even remotely effect it like -50. You can try to cover the oil cooler but I would be shocked if that worked. If no results happened try the radiator by covering it with cardboard. Don't forget to check your coolant level as that can cause it to not heat up in the winter.


ECUTEK I believe has oil temp monitor as well you can use to confirm if the oil is cycling or not.


As far as coolant is concerned if the t-stat is stuck open a bit it will cause longer warm up times, if its not stuck open it does not effect the heat up cycle because the coolant is trapped in the block with out being able to circulate just like on a oil cooler with a t-stat


What outside temps are having, that will have a effect along with oil weight.


Covering any part is not fixing the problem its circumventing the problem.


If you just had a non thermostatic and it did this then yes cover the cooler BUT this exactly why thermostatic coolers were designed to stop long warm ups