Genny oil

dougrainer wrote:
Synthetic oil is great. BUT, Synthetic oil will go thru minor gaps in various seals that regular oil will not.

A Mobil engineer told me years ago

I know you are a pretty savvy guy, Doug but..........
How many years ago was that roughly ??

The seal problem goes ALL the way back to the first couple of years of synthetic production and had to do more with the seal conditioning additives than with the oil itself.

I am pretty sure that problem does NOT exist with today's current synthetic production.