About to the first oil change since engine rebuild, got a couple questions.

[Lil Ape]

I'm about to do the first oil change since i bought this truck a year ago. Only put maybe 75 miles since it it's engine was rebuilt. I read from many places that you should do your first change before the 100 mile mark. But my first question is how many quarts will I need with a filter change? It's a 350 with stock pan I believe. Isn't it 5 quarts with filter change?

And Next question is the oil itself. Should I use syn since it's a low mile engine, or just stick to cheaper dyno oil? Here in texas, I've always used 10w30 and was recommended to go ahead and use syn since the engine is fresh. But this truck will not be a daily driver by no means. Couple short trips a week at most, And I don't care for the extra miles you'll get out of syn. So I was just going to stick with dyno. But since its a fresh engine, I wanted opinions. It takes me a few months just to put 3k miles on my daily driver.

The engine also has a flat tappet cam, and I know I will need oil with lots of Zinc, The only oil I know of that has a high lvl of zinc is valvoline vr1 I believe. And I prefer to buy oil from the self, not online, so I might me limited. I know amsoil makes awesome stuff, but I cant find it in stores. But If I buy an oil that doesn't have high zinc, would I be okay adding a zinc additive, or is that a bad idea?

I guess my biggest question is, synthetic or conventional lol.

[Hammered 77]

I just rebuilt my engine thid past year and my machine shop and engine builder bot recommended "Brad Penns" oil. It has the zinc additive in it.The machine shop does a lot race engines and has never lost a cam with this oil.

[Hammered 77]

I just rebuilt my engine this past year and my machine shop and engine builder both recommended "Brad Penns" oil. It has the zinc additive in it.The machine shop does a lot of race engines and has never lost a cam with this oil. I run 10W30' 5 qts. You can locate a dealer on Brad Penns web site.

[slugish]

I use some additive I order from summitt ( forget the name of it ) It has the stuff in it that oils used to have (Zinc & ?) .It is recommended for break in ,but I add a quart with every change just for added protection agaianst cam wear

[ETsC10]

I use Castrol and a 4oz bottle of ZDDPlus.
Use a good oil filter, too!
I run Wix or NAPA Gold (made by Wix).
If your truck runs rich, change oil more often.

[mud.man.rj]

I break an engine in in the first run, so 15 -20 minutes, change oil, put on about 300 kms, change oil then every 3 times a year with low kms on it just to keep the acid level in used oil down, usually ends up being 1,500 kms. I may change it a bit to often but better clean than not and cheap insurance, also use a botle of GM additive on every engine, every oil change. Not much for price if synthetic. usually run 5w30 in colder climate and 10w30 the rest of the year.

[old Rusty C10]

I use Castrol GTX in all my vehicles