How long does it take your car to warm up?

[cas951]

Originally Posted by Smallblock454

How old is your thermostat and water pump?

I noticed that my car warms up much faster since i've replaced thermostat, water pump and cooling fluid (all were OEM from factory - so 13 years old). I think the thermostates get fatigue and stay longer open.

Regards, Markus

+1.
I consider 15 minutes is too long for water temp to reach "normal" operating temp even at 40 deg. Below freezing temp will affect but not at 40 deg temp. Your primary culprit is the thermostat. It has two primary function.
1. Reach normal operating temp as quickly as possible by remaining closed.
2. Maintain normal operating temps by opening or closing coolant flow.

I suspect your thermostat to be partially stuck open when it's supposed to be fully closed.