05 Silverado 5.3 UOA

[Wills05]

Hello,

Here's my first UOA ever! I've been running Mobil1 in this truck since I've owned it, as well as the previous owner. Is Amsoil going to be a waste of my money if I change according to the OLM?

 

[Brybo86]

I would say yes

 

[RedOakRanch]

Go 10k on Mobil 1 or 15k on Amsoil. Anything less is a waste on either. Run PYB if you go by the monitor, that engine is easy on oil.