I'd recently added a dipstick thermometer to my '88 R100GS BMW. I'm seeing oil temps around 250 F after extended high speed warm weather running on the freeway. This seems a little high. This is on a bike with about 2.5 Qts of engine oil capacity and a smallish oil cooler. I calibrated the thermometer to ~210 F. in boiling water, so I think it's fairly accurate. I think the carbs are reasonably well adjusted. The timing may be slightly retarded and I may fiddle with it this weekend. I haven't really figured out a good way to gauge how much circulation I'm getting through the oil cooler. Compression seems reasonable. How much worry is this temperature worth, what might be influencing it and what if anything should be measured ? Thanks