SAE 10w30 any major brand.
NO. Not from the factory.
Yes it had 1 from the factory.
+31
No it is not. It is a factory TBI / Throttle body injection, None roller camshaft 5.7L 350 engine.
3.73
10w 30
If you are sure that it did not freeze and crack the block, Then the intake manifold gasket is leaking. That is a common problem with the vortec Chevy engines. You need to replace the gasket with a factory Chevy gasket from the dealer.
210 hp from the factory
Yes. You can always look up the recommended oil for your year/make/model/engine at www.amsoil.com
You must have an engine scanner to do that.
Do it yourself engine transmission flush and filter change on 2005 Chevy silverado 5.3?"
YES, They sure are and will interchange with NO problems. Direct bolt in.