Carmine, why the zinc additive or any other, I'm using 10w30 and it seems fine. But I do use oil that says for high mileage vehicles, why, just because of the age of the engine, it's never been rebuilt. Should I be using this new high tech molecular bounding additives?I use Castrol 20w-50 in my '62 409. Why, I'm not really sure. I know on a hot summer day, I have 50 lbs. of oil pressure at 45-50 mph, about 2300 rpm's. Idle about 28 lbs. I know it's a heavier oil, but I don't drive the car in cold Winter type weather, so it's not an issue turning over. I also add the zinc additive, Carmine.
Roller lifters.
Bob said it exactly. I buy the zinc additive through Amazon and add a bottle to every oil change. Cheap insurance in the scheme of things, Carmine.Carmine, why the zinc additive or any other, I'm using 10w30 and it seems fine. But I do use oil that says for high mileage vehicles, why, just because of the age of the engine, it's never been rebuilt. Should I be using this new high tech molecular bounding additives?
I believe the last time I looked at a label on the Rotella, in the l's t year or two, there isn't any zinc in it anymore.Poison,I like the Rotella also along with Delo 400 as much as people like to think of it as diesel oil I believe that they have maintained the zinc in it more than the standard auto oils.I've also had good luck with it keeping the engine cleaner inside.It is more limited in viscosity choices but I always run it if I can find a weight that is appropriate.