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drz,ktm,xr

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climbing the rocky mountains out here in colorado the xr is the last bike to over heat. The other formentioned bikes where boiling gas springing water leaks and finally at the top of a slow rocky 89.9 degree incline I heard my oil boil.

I shall switch to 100% synthetic and see if that helps

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I don't know what tempature your oil boils at, but I would say that is WAY too hot for an XR. You could actually hear it boiling ? The first thing to go is the cam bearing surface as the top of the head is the hottest area.

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Wow thats hot. I would say youre running lean as I go up some steep hills and I dont have my oil boiling. It also gets a lot hotter down here than it does up there. Good idea switching to synthetic.

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yes I could hear the oil boil! We where going up a very steep and rocky mountain. First gear high reving for many miles. Me and the bike were both working very hard.

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