Hi,

It is all about work load and the "wear out" time line. I put my engines through the max workload and need lots of oil for lubrication and perhaps cooling. Silversurfer puts his engines through the "long wear timeline" where if wear is not held to a minimum, engine failure costs big bucks and engine repair becomes a greater cost. As stated before, most hobby applications baby the engine and the engine impacts mother earth long before it sees a hundred hours. Light duty and short run life allows engines to "work with" marginal lubrication.

Elson