Oil question

[Hammermechanicman]

Ironic that by today's standards Pennsylvania oil is considered low grade due to ash and sulphur content.

 

[bertsmobile1]

Low grade for engine oil
Perfect for heavy loads like crash gearboxes train gears, mining equipment etc.
Disaster for any box with syncro cones

 

[Westman]

I'm using synthetic (ester based) Redline 10w-40. No problems.