Re: Amsoil Synthetic engine oil or Royal Purple engine oil
Roady
We like to run motor first few hours on dyno oil then switch to synthetic They seem to break in better. 3-5 hrs and then change to Any brand synthetic is good, Mobile1, Castrol, Amsoil, Royal purple, Cool power, Optimal. The list goes on. all of them provide better protection at higher temps and don't change viscosity as much when cold. Since your motor had a cam installed we use a moly based cam/assembly lube so first oil change will be darker than you would expect.
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