Shel_B
Site Donor 2023
- Joined
- Aug 7, 2020
- Messages
- 5,167
One of the things I read on BITOG is that some folks prefer a 10W-30 to a 5W-30 oil because it has a higher HT/HS and provides greater protection. However, I've noticed that many 5W-30 oils have a higher viscosity and, from what I've read here, that would equate to a greater HT/HS. Since I'm a Mobil1 user, I'm most familiar with their specs, although I've seen similar numbers with other brands. For example, here are the numbers for M1 EP:
So what, if anything, makes the 10W-30 a more desirable or stronger oil than the 5W-30? Might it be that the 10W has less or different viscosity improvers? Would this 5W have a greater HT/HS than the 10W?
So what, if anything, makes the 10W-30 a more desirable or stronger oil than the 5W-30? Might it be that the 10W has less or different viscosity improvers? Would this 5W have a greater HT/HS than the 10W?
Last edited: