Oil pressure question...I promise it's not another "who likes what' thread!

famous bob said
I take it , u havent read bill jenkins book , where they tested oils for his pro stockers , oil does get thinner w/ heat , even 50 w.

Of course it gets thinner. Viscosity is temperature based.

Does everyone think a 5 grade oil would have the same flow characteristics at say 20 degrees and 212 degrees?

That’s what Viscosity Index Improvers do. It’s in the name of the product.