I run syn oil and the temps run 200 to 225 depending on the ambient temp.

 

Well using an IR thermometer, checked with a electronic bulb type thermometer of 4 bikes i tested after a hour run head temps were in the 350 range for front and 400 range for rear. Measured on the flat next to spark plug. Oil temps were in the 215-235 range. You need to remember that exaust gas temps are in the 1400 -1600 range under load. gasoline ignites at like 450-475 (cant recall exactly) cams , compression add to that.

 

WTF - You can bake cookie on it!

 

technically you can bake cookies on 100 degree temps ......just takes longer

 

Don't worry about it! Use a premium synthetic motorcycle oil, don't ever let it get too low, change it often and just ride.

 

Thanks for all the input. I was just curious as I just installed a PCV on my Road King. I took the bike for a 30-40 minute run and when I got home I connected my lap top to the bike and the reading again was 255 degrees. I would assume the oil temp was lower than that, but by all indications I have nothing to worry about. (not that I was worried I was simply curious). BTW - for anyone who is interested the other day when I went out the outside temp high 80's and humid. The ride was a good mix of in town and highway. - Anyway - thanks again everyone.

 

Just get yourself and oil temp gauge. Analogs are less than $30 as I recall.

 

I have a oil temp gague in the fairing of of my 05 eg.Sender is in the oil pan.230 degrees 100 air temp 80 mph over hill and dale.Doesn't seem to go much higher than that even in traffic.Mobile 1 VTwin 20-50.

 

I had same questions when i install pcv trust me it runs cooler than factory settings, i put oil temp gauge on my and runs about 215 to 230 on hot days and i leaned mine out some from fuelmotos settings and could go a little more. Just ride it like you stole it.

 

200-210 on my carbed 04 Springer, after an all day ride in the MIssissippi heat. Amsoil and no oil cooler.