quote:$100K engine Only one answer to that. As far as oil goes your temps are not that high, though I would bet you would see cooler temps with a synthetic. Secondly, Oil analysis. I do this on an F150 4.6l engine that might cost $4,000 brand new. I wouldn't be able to sleep night not doing one a $100K one.
Originally posted by JimG: Here's the question: I switched my 600hp 509 to Kendall GT1 20W50 based on Mercruisers recommendation to run this oil in their HP1050sc's (at 100k each!!). How does this oil compare to Quicksilver 25W40, and is there another quality dino oil we should be considering?