Originally Posted by Ase
This was told to me by a salesman that says he was also a chemist that is the rep now for a high end lubricant company that sells to the mining business among its customers where it's not uncommon for a 500,000 gearbox replacement in that industry so bottom line he explained to me that a synthetic oil only has a limited amount of chains to attach an additive package to. Vs a conventional oil. Making the conventional oil much better for protecting those engines and gearboxes that are so expensive they make super cars look like toy cars. Cost wise. Any thoughts to this ? True or not ?
I was looking for top grade oil for my cat c-12 Diesel engine. And for my automobiles gas and diesel !
Synthetic oil is much better than conventional.
Speaking of gearboxes, the distributor shaft (a sleeve bearing packed with grease) in my Toyota is prone to burning up the grease and seizing. They don't even make the part anymore.
Several years back, I rebuilt the distributor and packed the shaft with Valvoline Full Synthetic moly grease. Hopefully, it will last. Pack it with grease containing conventional dino oil (Group I) or even the improved conventional Group II? The grease would burn and the bearing would be toast in 100,000 miles.