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Hello, everybody! I was trying to get help to see if my vehicle is getting to operation temperature or if my temperature gage is broken. I will attach a picture of where if always sits.

On top of that, I was wondering I anyone had the correct temperature range for the following; coolant temp, oil temp, oil pressure, and trans temp?

I have the 3.6L flex fuel vehicle I use 89 because I was told it keeps the engine cleaner. Should I be using 87 or 85 to get optimum performance from my vehicle? I'm not sure if it matters but my vehicle had 72K miles.

The the following are the mods I have done to the vehicle; pcm edits- added sport mod srt track (had low gear before), cool air intake, and I have a custom catback exhaust.

I would be happy to answer any further questions you may have in the comments.

Thank you.
 

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Oreo:
First off, thanks for providing important info such as year/model/mileage right from the start. It blows my mind, when folks post a request for help, and tell us nothing about what they drive. I have to wonder, if they visit their doctor, and tell him/her , "I hurt, fix me", expecting the doctor to read their mind.

Your engine temp gauge should run around half way when the engine is at operating temp. I'd say you have a failing T stat, or bad temp sender. The DIC is reporting the same low temp though, so I would start with the t stat. As far as fuel grade goes, you can run it on 87, and suffer little to no ill effect. You "might" lose 5 hp under full throttle, if the knock sensors detect some, and pull some timing. I run 87 in my '14 R/T. When fuel prices dip, or I come across a station that is selling premium for the regular grade price, I'll fill her up. The way I drive, and no more than 5k a year, putting 91 or 93 isn't worth it.

Don
 

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Do the 3.6's run hotter than the 6.4's? My 6.4 has never once ran close to halfway on the gauge, which would be about 215F unless idling or at a light in the summer. It's always ran 190-197F under normal operating conditions. Slightly cooler in cold weather.
 

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It's certainly possible, that Dodge changed their "normal" setting on temp gauges at some point. Both of my V8 Durangos as well as my '14 R/T run at or just under half scale. The few 3.6L Dodges I have driven, ran around 1/4 scale. I assume that is normal for the 3.6. Hopefully other 3.6 owners will chime in.

Don
 
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