Yamaha needle bearings

[DougBradlow]

Hello I was wondering if anyone new of a good grease to use on wrist pin needle bearings.I want to install new wrist pins and needle bearings on a new crankshaft and I want to use the right lubricants.The needle bearings are not caged they are loose,I don't have the special Yamaha tool for this so I figure I could use a light grease on the wrist pins and roll the needle bearings on the pin then insert them into the rod.Looking for advise.

[rodbolt17]

vasoline.
also known as boy butter.

vasoline will work.