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TX5Star 07-14-2014 02:38 PM
Coolant temp
 
3500 drw 2011 coolant temp fluctuates rapidly. From 204-230 under heavy load. Increases going uphill
Replaced old thermostat still same issues.

Without a load I'm at 190-200

coors_man_2005 07-16-2014 08:42 PM
How full is your overflow tank?

TX5Star 07-16-2014 10:03 PM
Coolant temp
 
Originally Posted by coors_man_2005 (Post 1067812)
How full is your overflow tank?
It seems to be at minimum level constantly even when I refill, few days later it's down again

Trophy 07-21-2014 06:40 PM
Originally Posted by TX5Star (Post 1067819)
It seems to be at minimum level constantly even when I refill, few days later it's down again
You either have a leak or antifreeze in your oil. At first I thought about your cooling fan turning on to reduce the temps going up a grade under a load, but the consuming of antifreeze makes me question where it is going. Take a sample of your oil and send it to a lab like Blackstone, they can tell you if the antifreeze is getting into your oil in minute quantities that are being consumed. It is relatively inexpensive around $25.00 or so. Just my 2 cents worth.:humm:


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