Originally Posted by edyvw
Originally Posted by 21Rouge
Originally Posted by edyvw
Originally Posted by 21Rouge
FWIW:
UOA for M1 ESP FORMULA 0W40
However, big question is TBN and TAN. Why you did not do that?
I consider the determination of TBN to be useful if one is considering a long OCI. And doing a rough extrapolation, it appears that for any of these oils I have had analyzed I would be 1 quart down somewhere around 8500 km i.e. about 5k miles. I refuse to add oil so out it comes.
Yes, but many R owners do 5k changes. As I sad, around 2015 I did UOA of Mobil1 ESP Formula 5W30 which is VW 504.00/507.00 and it was already at 1.7 TBN at 3k. If you did 5K, it would give confidence people that they could go 5k on those oils. That is all issue around VW504.00/507.00
My car (RS3) I do oil change once a year which is about 6-7k. Only use 504 oil because that is what OM calls for. I have absolutely no concerns since fuel changed a couple years ago, also 7.5 qt oil capacity. Same car in Europe with same oil calls for intervals of up to 20k miles.
Originally Posted by 21Rouge
Originally Posted by edyvw
Originally Posted by 21Rouge
FWIW:
UOA for M1 ESP FORMULA 0W40
However, big question is TBN and TAN. Why you did not do that?
I consider the determination of TBN to be useful if one is considering a long OCI. And doing a rough extrapolation, it appears that for any of these oils I have had analyzed I would be 1 quart down somewhere around 8500 km i.e. about 5k miles. I refuse to add oil so out it comes.
Yes, but many R owners do 5k changes. As I sad, around 2015 I did UOA of Mobil1 ESP Formula 5W30 which is VW 504.00/507.00 and it was already at 1.7 TBN at 3k. If you did 5K, it would give confidence people that they could go 5k on those oils. That is all issue around VW504.00/507.00
My car (RS3) I do oil change once a year which is about 6-7k. Only use 504 oil because that is what OM calls for. I have absolutely no concerns since fuel changed a couple years ago, also 7.5 qt oil capacity. Same car in Europe with same oil calls for intervals of up to 20k miles.