It isn't so much what Oil you use,as long as you change it frequently.
For near 20 years,I run 5W-30,whatever is on sale.
On the filter,I make my own period correct P-25.
I buy the same size federated oil generic Black Oil filters for a buck,then I made a stencil of the NOS red/white/blue AC colored logo one.
After spraying the filter white,I lay my two stencils over it and hit it with red,then blue.
Looks fabulous & after 6 months I throw it all away anyway.
