i have a freshly built motor, (ls turbo) has about 2k miles on it and have done 3 oil changes since then.
question: will reg 10-40 oil cut it? or am i going to have to go to fully synthetic 10 40? i was told they i shouldn't get "fully" synthetic but a blend of it. i just need a bit of clearification, want to keep my engine happy

 

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