Originally Posted By: d00df00d
As I understand, Red Line's party piece is their oils' ability to withstand extreme operating conditions.
Originally Posted By: Red Line Synthetic Oil Corp
Q: How often should I change my Red Line oil?
It depends on how you drive. If you do a lot of city driving or low speed/low frequency driving, we recommend oil changes at 7500 miles. Vehicles that see more highway driving can go a maximum of 15,000 to 18,000 miles with an oil filter change in between.
Originally Posted By: d00df00d
Plus, esters in general are not that well suited to very long drain applications because they are hygroscopic and not as resistant to chemical breakdown as, say, PAO.
Yes, but we aren't talking about esters in general here, we aren't discussing old stereotypes, we are talking about a very specific product here.
Quote:
Mobil 1, on the other hand, is a Group III/IV oil that is formulated with a bit more of an emphasis on long drain intervals.
M1 EP? Maybe. I don't see this long drain emphasis from M1's regular line though.