OVERKILL
$100 Site Donor 2021
No.Related question. Last oil change I filled the car with M1 10w40 high mileage. Before that I ran Valvoline Maxlife synthetic blend 10w40. The car seems to be using a lot of oil with M1. I’ve driven around 500-600 miles since the last oil change and have already used a qt of oil. I used a qt probably the entire interval when running Maxlife. Is it possible this old engine does not handle synthetics well? The reason I ask is because classic Ferrari is another hobby of mine and my mechanic told me to always use conventional in any Ferrari older than 1984. He said the style of rings they used didn’t seal well and synthetic oil would lead to excessive oil consumption. Maybe this is what’s happening here?
Where's the PCV located on this engine, is it in the valve cover? On the SEFI ones, the PCV had a screen beneath it (it was located in the back of the lower intake) and the screen would plug up and then the engine would drink oil.
If you've got gunked-up rings, might be worth trying Valvoline Restore and Protect, though I don't think it's available in your xW-40 preference yet, but that engine would be fine on an xW-30.