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Perfectlap · 05-01-2013, 07:32 PM

I don't think Excellence/Callas were indicting all Mobil1 products. Just this particular formulation which is probably the most widely used for this car. And it really wasn't so much an article as a Boxster owner writing in to Excellence about his plans to switch from Mobil1, which he changed well below the factory recommended interval, to Castrol, as well as the weight in part because he was in very hot weather climate. The answer, surprisingly (for a magazine like Excellence that needs to maintain a good relationship with Porsche) praised his decision to get off Porsche's preffered oil for the Boxster and likewise his decision to have kept Mobil1 in for only short stints.
I thought it was pretty ballsy to make the case that in their opinion Mobil1 0-40 is not passing long term muster.
Also, Castrol Edge which apparently just meets the ZDDP recommendation of Excellence/Callas can be picked up for $5 per quart at stores like Autozone during regular sales.
So what $50 plus a $20 filter and you're done? Why go out of your way to add the recommended level of an important additive that is already provided a reasonable cost with the Castrol product? Are you really saving all that much money by buying a jug of M1 at Wal-Mart only to then go tinkering with your oil to find the precisely correct quantity of ZDDP?

05-01-2013, 07:32 PM	#12
Perfectlap Registered User Join Date: Nov 2004 Location: New Jersey Posts: 8,709	I don't think Excellence/Callas were indicting all Mobil1 products. Just this particular formulation which is probably the most widely used for this car. And it really wasn't so much an article as a Boxster owner writing in to Excellence about his plans to switch from Mobil1, which he changed well below the factory recommended interval, to Castrol, as well as the weight in part because he was in very hot weather climate. The answer, surprisingly (for a magazine like Excellence that needs to maintain a good relationship with Porsche) praised his decision to get off Porsche's preffered oil for the Boxster and likewise his decision to have kept Mobil1 in for only short stints. I thought it was pretty ballsy to make the case that in their opinion Mobil1 0-40 is not passing long term muster. Also, Castrol Edge which apparently just meets the ZDDP recommendation of Excellence/Callas can be picked up for $5 per quart at stores like Autozone during regular sales. So what $50 plus a $20 filter and you're done? Why go out of your way to add the recommended level of an important additive that is already provided a reasonable cost with the Castrol product? Are you really saving all that much money by buying a jug of M1 at Wal-Mart only to then go tinkering with your oil to find the precisely correct quantity of ZDDP? __________________ GT3 Recaro Seats - Boxster Red GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11 Fabspeed Headers & Noise Maker BORN: March 2000 - FINLAND IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW Last edited by Perfectlap; 05-01-2013 at 07:42 PM.