Going to pick up 2 cars tonight. 1953 Pontiac Inline 8 with 88k And a 1954 New Yorker Hemi 331 with 91k. The Pontiac does not have a oil filter. The Hemi Should.Correct? What kind of oil and weight recomendation for both? Brad Penn 10w30 for high zinc? Does it have to be a non-detergent for the Pontiac? What do I need to do for the Pontiac oil system? Mainly will be used for weekend and 1-2 hour road trips.