IMO:
Use the right viscosity oil.
Never put a load on your engine until it has oil pressure (don't start and rev).
Below 0, I like 5-10 minutes of warm up time.
Above 0 2-5 minutes.
Above 20 I move after 30 secs.
Under all conditions I never rev the engine until the guage starts moving up.
Anything more is wasting fuel and polluting our world.
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Back button again, I must be getting old.
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