d9103365
Well-Known Member
Looking at the owners manuals for our cars, it seems that they were meant to run on just about anything, because specific oil weights are almost never specified.
I have a 1975 fury 318 with 90k original miles, all factory. I live in the south, a warm climate. My car has an old sticker indicating that it had 10w40 at one time, but im not sure what it has now. For my 318s i always used 10w30 because i felt 40 weight was too heavy. I felt that it caused lifter noises and took too long to get flowing on startup. Even now my car lets out a little puff when its first cranked as if the oil takes time to circulate.
Anyway, whats best for these old 318s? 10w30 or 10w40?
I have a 1975 fury 318 with 90k original miles, all factory. I live in the south, a warm climate. My car has an old sticker indicating that it had 10w40 at one time, but im not sure what it has now. For my 318s i always used 10w30 because i felt 40 weight was too heavy. I felt that it caused lifter noises and took too long to get flowing on startup. Even now my car lets out a little puff when its first cranked as if the oil takes time to circulate.
Anyway, whats best for these old 318s? 10w30 or 10w40?