Originally Posted by Indestro
I hate to be slow, but exactly what is the difference between the "old" Mobil 1 ESP 5W-30 and the "new" Mobil 1 ESP 5W-30 (other than the bottle shape)?
Indestro
Drop in HTHS from 3.58 to 3.5. Ash going from 0.6 to 0.8, and flash point going from 254c to average 230c.
NOACK reportedly on old one was 5.6%, the new one? Who knows, but it is probably average for C3 category. Mobil1 0W40 FS also had increase in NOACK compared to previous VISOM base, so same is to be expected here.
Is new ESP good oil? Yeah. Is it better than average? probably not. The old one just had much better performance than other oils of same category.