11-06-2022, 08:00 AM
(11-06-2022, 04:24 AM)m in sc_imp Wrote: oil weight spec has a lot/most to do with how the motor was constructed (build tolerances, particularly in cold starts) and the environment it is run it. most oil related wear is from people cold starting and revving it right off the bat or just taking off w out a proper or any warmup. valve guides wont cause smoke, stem seals will.. or rings, which i bet was the cause. from what I mentioned above.
10/30 and 10/40 will act the same in a cold start. you would be amazed at to how little oil is really needed to provide proper, or enough, lubrication.
Yes of course. He may well have been providing improper lubrication for his entire ride at temperature.