yeah, pretty sure I'll be right. Many hotty XR's had oil coolers way back when Noah was a boy
I've just never had a bike with one fitted or had anything to do with them so I thought I'd ask incase. I like the Dennis Kirk jobs Leith but it's an overkill budget wise when the bike will be rarely ridden. So far it owes me about $140 I think
another $200 to plug a hole would bite hard
they say there is a 6mm bolt beside the plug to remove to check oil flow on the XR.