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[lsm360]

What about my 78 Super Six?

I know this gets a little controversial Cap'n, but if that motor is a flat tappet cam (must be, right guys?), then a oil with a zinc additive is prudent. I add it to my '89 S Code with flat tappet cam.

I wouldn't be worried about going back to regular oil from the high mileage. I used it a couple of times when Walmart was out of the standard one and have gone back to the standard one without problems. High Mileage oils claim to have more detergents to fight sludge and conditioners for seals, but you'll be ok going back.

[Dippy.org]

[79dodge4ever]

I know this gets a little controversial Cap'n, but if that motor is a flat tappet cam (must be, right guys?), then a oil with a zinc additive is prudent. I add it to my '89 S Code with flat tappet cam.

I wouldn't be worried about going back to regular oil from the high mileage. I used it a couple of times when Walmart was out of the standard one and have gone back to the standard one without problems. High Mileage oils claim to have more detergents to fight sludge and conditioners for seals, but you'll be ok going back.

an additive would help but dads 80 slant 6 never seen any; just quaker state 10w30

[Ice Cold]

A 78 and 79 motor is the same.
If Herb says regular oil is fine and I don't need Z-Alt, then I'll go that route.

[Captain Caravelle]

A 78 and 79 motor is the same.
If Herb says regular oil is fine and I don't need Z-Alt, then I'll go that route.

I'll buy that.
Kinda figured I was ok.