I agree with this. On my 1MZ-FE I would not go 10,000 miles on any oil, much less 15,000. On the other hand my 1NZ-FE is a completely different story, as is the F22B2 engine in my Accord.
The recommendations by the oil manufacturer for extended drain (ex. M1 EP) are generalizations and not necessarily specific to a particular engine or driving profile.
Originally Posted By: virginoil
IMO mileage on the oil is not determined by the oil manufacturer it is determined by the vehicle manufacturer.
IMO sump capacity is probably the key factor to extended drain. Almost all vehicles I have looked up on lube recommendations with a long drain also have a larger capacity sump compared to the same vehicle and engine of an earlier vintage.
How oil manufacturers can promote extended OCIs beyond the OEM recommendations is unclear
The recommendations by the oil manufacturer for extended drain (ex. M1 EP) are generalizations and not necessarily specific to a particular engine or driving profile.
Originally Posted By: virginoil
IMO mileage on the oil is not determined by the oil manufacturer it is determined by the vehicle manufacturer.
IMO sump capacity is probably the key factor to extended drain. Almost all vehicles I have looked up on lube recommendations with a long drain also have a larger capacity sump compared to the same vehicle and engine of an earlier vintage.
How oil manufacturers can promote extended OCIs beyond the OEM recommendations is unclear