06-08-2020, 08:19 PM
Hi KC
Many anguish over the ideal engine oil, resort to exotic stuff and consequently lay a very expesive exhaust trail, presumably in search of 200,000 mile rebores. But from what I have read cyl and ring wear effectively ceases with any oil above a reasonable cyl wall temp and this largely accounts for the increased life of 1950s and later cars and the amazing life of ultra fast warm up moderns. I suspect most would do better with Supermarket 15w/40 and a thermostat.
Many anguish over the ideal engine oil, resort to exotic stuff and consequently lay a very expesive exhaust trail, presumably in search of 200,000 mile rebores. But from what I have read cyl and ring wear effectively ceases with any oil above a reasonable cyl wall temp and this largely accounts for the increased life of 1950s and later cars and the amazing life of ultra fast warm up moderns. I suspect most would do better with Supermarket 15w/40 and a thermostat.