a questing to the op
whats ur temp gauge reading when the scanners read 183?

 

Ok, I'm going to be the a$$ here. You have a full keyboard in front of you. Use all of the letters. There is no need to use ur in place your or u in place of you.

Type it out, I assure you it wont kill you.

 

About 180, The gauge reads about the same.

 

Take the miles Ive driven, and divide them by how many gallons I put in.

 

SO whats this gotta do with him getting 10 MPG? The factory sensor and gauges arent really that accurate anyway.

In addition to what Chris said, please use punctuation. Its a PITA to decifer what you are saying.

 

Ok, are we talking about going a full tank or just 3/4's and then fill up?

 

Agreed, not as bad as some of Max's posts though...that's like freaking hierglyphics (SP)

 

Actually, it should unless it is near arctic outside. There's no way uncirculating coolant will hold at that low a temperature, and if the t-stat is not opening the coolant is not circulating. He either did not run the engine long enough to get it up to temperature before taking that reading or it is reading from a different point on the engine than where the t-stat is.

 

Well, i dont run it dry. Usually fill it up at 1/2 tank or 1/4.

 

I think the proper way to do it is to fill the tank up, then drive the truck until the tank is nearing empty. Take the miles driven divided by how many gallons tank you have (26 or 35) - a couple gallons.