When comparing M1 5W30 EP vs. M1 5W30 ESP for a 5K max OCI : Both oils will keep an engine clean . ESP is more shear stable but with a shorter 5K mile max OCI it may be a wash against long drain EP . M1 EP is longer drain but for a 5K max OCI it doesn’t matter as compared to M1 ESP . Does ESP produce less potential intake valve deposits over 5K miles vs. EP ? … I’m not sure . By being C3 rated , the M1 ESP has a higher HT/HS of at least 3.5 while M1 EP is around 2.9 to 3.0 .
* My main curiosity is is weather M1 ESP produces less intake valve deposits over 5K miles vs. M1 EP , is M1 ESP being more sheer stable to make a difference at a 5K mile OCI vs. longer drain EP and lastly - does M1 ESP having an HT/HS of 3.5 make much of a wear numbers difference over the 2.9 to 3.0 HT/HS of the M1 EP for up to a 5K mile OCI ?
**Full disclosure : 1) My Hyundai 2.4L GDI never sees more than a 3,500 mile OCI now with M1 5W 30 EP and 2) I buy M1 5W 30 EP for a short OCI because at WM I get it for only $2 more than vanilla M1 5W30 (better additives with EP version ).
* My main curiosity is is weather M1 ESP produces less intake valve deposits over 5K miles vs. M1 EP , is M1 ESP being more sheer stable to make a difference at a 5K mile OCI vs. longer drain EP and lastly - does M1 ESP having an HT/HS of 3.5 make much of a wear numbers difference over the 2.9 to 3.0 HT/HS of the M1 EP for up to a 5K mile OCI ?
**Full disclosure : 1) My Hyundai 2.4L GDI never sees more than a 3,500 mile OCI now with M1 5W 30 EP and 2) I buy M1 5W 30 EP for a short OCI because at WM I get it for only $2 more than vanilla M1 5W30 (better additives with EP version ).