Gotta say 260-270 in Minnesota in March is MUCH hotter than I would expect your bike to run after being dynotuned.

 

I haven't checked it in March, I checked it last summer and it was around that temp on a 95 degree day.

 

I've got basically the same set up, with the dakota digital dash and I run 215-220 mostly. On ultra hot days I can get up to 240 or so but seldom do i see 250 and have never seen 260 on the hottest 100 deg days.

 

My '10 RG, (TC96 stage 1) running full synthetic 20/50, no oil cooler or fans "normally" runs between 210-230 depending on ambient temp and speed. It'll hit 250-260 going up a mountain pass or in stop and go traffic. Hottest it's ever gotten was about 290° inching through Sturgis.

 

Here in SoCal I never see 230. 10.5 comp, heads ,cams , blah blah blah.

 

maybe I need to use another type of gauge to double check. And if that says the same temp, I may need to have Jamie at Fuel moto recheck it.

 

Pretty much...do not worry about your oil temp............your heads/valves will destruct before the oil over heats.

 

I threw a Jeggs oil cooler on my bike with a thermostatic control that doesn't even open up to allow the oil flow thru the cooler until it hits 190* degrees.
I have an oil temp sensor on my Dakota Digital and it runs between 190*-230* degrees.

 

2010 Ultra TC96 runs in the 230's with no cat, Jagg 10 row (no fan assist or t-stat), PCV, SE air cleaner and 3.5" jackpots as indicated on a JES oil cap temp dip stick. The oil cooler really did seem to help on mine.

 

I have been logging my oil temperatures for the last 4 years on my 96" twin cam. Stage I and fuel management device installed. No oil cooler. All of my miles are on the open road, one up and 70-75 mph for at least 40 miles. I use two different digital thermometers to measure oil temps by removing the oil cap and lowering the temp probes into the hot oil immediately after shutting the bike off. Relative humidity can have a small bearing on oil temps, but I make no effort to factor that in. Since my riding style is such that I never see any oil temps in the 260-300 degree range I don't see a need for synthetic oil, preferring instead to use a high quality diesel 15-40 weight. I recently tore the bike down at 75,000 miles to inspect and I found nothing unusual. I was actually surprised how good things looked. Realize that if you do a lot of stop and go riding in a city environment in which you stay below 30 or 40 mph your oil temps are going to be considerably higher. It is an air cooled engine, so you need to keep them moving. Here is what I see on my bike:


65 degree ambient air temp=189.5 degree oil temp
67 degree ambient air temp=197.1 degree oil temp
82 degree ambient air temp=207.7 degree oil temp
79 degree ambient air temp=201.5 degree oil temp
90 degree ambient air temp=203.4 degree oil temp
97 degree ambient air temp=216.6 degree oil temp
101 degree ambient air temp=221.4 degree oil temp
102 degree ambient air temp=229.5 degree oil temp
90 degree ambient air temp=218 degree oil temp


The fact that all of my riding is at 70-75 mph no doubt contributes to the lower oil temps because the bike is moving and gets a lot of air cooling over the fins, which is what it is supposed to do. The slower you go, the hotter your oil will be in warm weather. I am not suggesting that anybody else will get the same exact results but my examples will give others some idea of what to expect. And like they say, "everybody is entitled to their own opinion".