Re: What oil viscosity in fresh SBC in cold weather?
you're on the right track for break-in and weight.. heavier oil for heat, light oil for cold..
also mind the tight engine and high output pump.. heavy oil may build too much pressure..
try searching sbc break in oil and several engine builder threads on various forums will pop up..
if you had a local shop do the engine work, ask them what they recommend for your climate..
or consult manufacturer's recommendations of the components you used in your build..
good luck!
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