During today's "after ride wipe-down" I noticed oil pooled up on the engine, just above the front sprocket
(https://lh3.googleusercontent.com/yOO_1qWSB8_o-qJbvP4AharmBjxM0EFEHML_voj8P11H5hcVuK16I512oTV2AAbKqPlo3WLkdVkWDbctiw5e4BGU299WYh0pcB4Qbr8isCHNtZkIgVezXPHsKyzcsmAaK8k2d5C56R4=w2400)
I followed the mess up the engine
(https://lh3.googleusercontent.com/XsZTOUPVNZGpVeiKkfAKJI_Sny3YuYVnMZfDhLv_cYQ2wj71O5kZfc9o51aeZL5fDcrJHMOoB8cl1km2BEmHompXoMRM0keNeb1zRCVOPMJGpRG2LoxPKz9KElHmQCbCMLtdCV9-_L8=w2400)
To this bolt!
(https://lh3.googleusercontent.com/H0gadByiw6QqHcSaMXy_ddVb9c0paX2PxvgXiWy6SGyC-ko8LYhO064KPXZi9omFnWPF_95pC0twMBRcaoUk6TQ0t-MwaWGVdsr4dpxVBt3nkUGT_YZjkwIfMdkT6QWWTrptK7loQ5A=w2400)
There was a big drip hanging off the bolt that I wiped away before the pic. I originally thought I must have not tightened the bolt down good at the last valve check and it could have loosened up over time. I put a hex key in it and it was at least hand tight. For now I loosened, cleaned, and re-torqued it. Then cleaned up the oil to keep an eye on it. Is it OK to use locktight on a bolt that is in contact with oil, or should I put some kind of sealant on the threads?
That bolt has a crush washer under it for sealing.
Get a new crush washer.
If it's copper, you can anneal it and re-use.
Neither loctite nor sealer should be needed.
Thanks Speed! Didn't realize that was a crush washer under there. I've got a McMaster order going in soon to replace some corroded fasteners, so I'll add some crush washers to the list.