At my local walmart, they sell ACCEL oil for pre-89 engines with "higher" levels of zinc in it. You could look into that if you want.

 

you can just buy some of the Lucas assembly lube oil and put a couple tablespoons in with your oil change like i do (If you want more zinc). I bought one about a year ago and I have about 1/2 left.

But, I know my 1996 5.2 called for 5w20 (Aka, the Chyrsley weight) and my 2001 5.9 calls for 10w40. look at the manual.

 

That's cool we don't have any Accel oil around here, I didn't even know they made oil.lol

 

Just because i wrench doesn't mean i know what the government is up too. I definitely don't know everything in this business. I simply get to fix what is wrong. I don't get to tear down much and see the science of it. I do know as time goes on, new things come out. And some of that can be applied to the older stuff. If dodge 5.9,5.2 is the same firing order as a chevy 5.7. Chevy figured out if they swap 2 cyl in there firing order the engine runs smoother and makes better hp. I would like to run a swap cam. Cheap up grade for more hp I think. As far as zinc. I think the table spoon a change thing sounds good to me.

 

I work at a scrap yard, and am familiar with zinc. Its similar to aluminum, but darker and heavier. Also, brass is an alloy of copper and zinc. But what the frig does it do in motor oil? Doesn't seem like it would make a real good lubricant, judging by the zinc I see. Just curious.