I have a 2010, Ford E 350, 6.0 and am trying to find out if there is an engine cooling thermostat that will lower my coolant temp a little, on a hot day, no a/c on, the engine will run up to 200 degrees, usually runs at 188. Having purchased this van recently and not knowing if a coolant flush was ever done, will probably get it done next week, also understand that the 6.0 does not like to be over heated, please help, thanks, Tom

 

I'm not familiar with the E-Vans but I do have a F350 Superduty with a 6.0, that being said does your fan operate correctly? These engines produce a lot of heat and depend on correct fan operation, they operate at variable RPMs in relation to engine temp. It sounds like yours may not be functioning correctly. If you have a way to monitor fan speed, watch what it is doing as your temps start to climb above your thermostat temp. It's worth mentioning that my fan does not ramp up to full speed until my temp is up around 207. Also I now have a Mishimoto 200* T stat but when I had the 190" ford tstat my temp would run around that temp when not under a load. Probably not much help, but a different prospective.

 

200 degrees is perfect for your diesel. I would be more concerned with the 188. Diesels have no spark plugs and rely on heat and compression to fire. Hotter the better to a point. 200 to 204 is where my 05 ran for the 10 years that I had her.

 

^^^ what 69cj said x2

 

It's not overheating until 215*f+. By 210*f (at the latest) you should be hearing the fan roaring, if you're not that's when you should be concerned.

188-200*f is a perfectly fine and acceptable range to run in Mine ran 188*f for years until I put the 200* Mishi stat in.

 

Just a side note to this.

Over the years of driving. Our a/c condenser, radiator, trans cooler and intercooler gets dirty between the fins over the years. This hampers airflow through the fins that aids in heat transfer. Just take a look at your a/c condenser outside at your home. Something that I'm planning soon is to clean the fins on my truck. I do this yearly to my condenser at home. Which really makes a difference in the airflow between the fins.

You'd want to to use something safe to clean the fins. Either a/c fun cleaner found at most hardware stores, lowes, HD etc. Or, simple green aircraft extreme. It's safe, non corrosive and easy to use. You can find it on walmart's website for about 22 bucks a gallon. They more than likely will have to ship it there. Then you just pick it up.

You'd want to read the instructions carefully and make sure for yourself that it won't damage your paint etc.

Just wanted to pass on another option in maintaining the efficiency of not only our cooling system. But, also radiator, trans cooler etc...

Simple Green Extreme Aircraft Precision Cleaner