Was driving to work this morning - about a 15 min. drive, and noticed my engine temp. gauge was going up and down...
About a week ago, my oil pressure gauge was reading really high - I am told these guages are "fake" but it has to be doing something?? at the same time this was happening, my truck was running a little hot - temp gauge reading about 3/4 of the way to the right but wasn't getting any hotter. then the next day or two, sometimes it would do this, and other times would run a little hot - How I drove the truck, how fast, how long, etc, didn't really seem to impact this in any way.
Back to this morning, the temp. guage was going from 3/4 of the way to the right (running hot) to back to the middle and being "normal", my oil pressure gauge was reading high - there seems to be a direct relationship to my "oil pressure" and my truck running a little hot.
I NEED to change my coolant, I know this, it it old old old. I also will be getting my oil changed - these 2 things are going to get done within the next week or so...
any thoughts as to what is causing the temp to go up and down?
what is casuing my "fake" oil pressure gauge to read high?
...these things are related how?
will I damage my engine at all if the engine temp gauge is about 3/4 of the way to the right (hot side) for like a 10-15 min drive?