New 07 fxstc. Love the bike, but my thighs feel the heat like never before. Stock exhaust. 1000 miles. This bike runs hotter than my 01 dresser. Has anyone actually cooled off this engine. Andby how muchh. I test the temp with a calibrated digital thermometer and ride with the dial thermometer in the oil tank. I would like to ride this bike to Sturgis this year but with the heat I feat the 100 plus days in the plains. I currently get about 42 mpg, all stock. Help!

 

I t will begin to drop off a bit after its well and truely broken in. But I would start thinking of changing the oilto one of the better grade synthetic oils. Most of them will help drop the temps a good15/20 degree's.
If its still kind of high then it might be a good time to think about a decent oil cooler. Contrary to popular opinion they will help to drop the temps some more. Even if its only a couple of degree's it may be enough to keep the oil from loosing its effictiveness for a little longer.

 

My Softail Custom has 500 miles on it and in the heat of South TX runs around 230. I do have V&H exhaust with the V&H fuel pack and run about 38 - 39 mpg. I was concerned as well and the dealership told me if it runs above 250 then you need to start worrying. Since your bike is stock I'm sure you're running a bit lean as well. Synthetic oil, pipes, and a fuel managment system will bring your temps down. I eventually do plan on running an oil cooler once funds are available.

 

I noticed my new Fat Boy seems to run quite hot as well, although I don't (yet) have a gauge to tell exactly what temp it's running at. I can sure feel it, though. I did read the thread about Mobil 1, which claims to really help cool the running temp with use of synthetics, and also (as mentioned above) some other threads explaining that the standard configuration tends to run lean and that tuning (using PC III, SERT, etc.) will really help in this area as well.

I'll be changing out to synthetics once I get to 1000 miles, and am ordering pipes, A/C and PC III today. I figure I'll have them on once I hit 500 miles, then will see how much the tuning helps in this regard.

Good luck!

 

Bike used to run consistently at about 250...techs all said that was in the norm. Changed out to synthetic and dropped about 20 degrees.

 

I have an '07 S/T with pipes, v&h br, and SCRT and running syn3 at 4000 miles. Mine runs (in heavy traffic) at 205 at ambient temp of 93. Do your upgrades, and use syn oil, and you will notice a big difference.

 

Ihave the same bike, and in stock form it ran very hot. Khromewerks slip ons, Arlen Ness Big Sucker, and Cobra EFI Tuner have cooled it down considerably. Hottest temp I have seen recently was 230 in hot weather during city riding. Highway running usually around 210 or so.Am running HD Dino oil right now, may switch to Mobil 1 at next change. Stock fuel mileage was around 43, probably getting 36 to 40 now. It's worth it for a cooler running bike.

 

Eliminate O2 sensors with PCIII; Thundermax auto tuner uses wide band O2's; LC1 wide band O2 upgrade are a few options, along with synthetic lubricants, with all mentioned, will make a huge difference in engine heat.

 

I went the easiest route I could find.

2007 FXSTC, 2900 miles.

Screaming Eagle Air Cleaner
Stage 1 Download
Rush Slip-Ons with 1.75" baffles
Amsoil 20W/50 Full Synthetic

Average oil temp is 200/210 degrees. Hottest I ever see it even in stop & go traffic on a 90+ degree summer dayis 220/240 degrees.

Bike runs perfect and sounds great.

(sig pic is NOT updated yet)

 

5300 on my 07 FXSTC...

Amsoil in all 3 holes, runs around 210 according to the temp gauge on the dip stick. 90 degrees down here most days now.. I've run it hard and long, still stays under 230...