Mobil 1 Oils Analysis

6 replies to this topic
  • Vibeguy

Posted July 05, 2005 - 04:09 PM



The oil analysis results comparing the old Mobil 1 15w-50 synthetic (red cap) and the new Mobil 1 15w-50 Extended Performance (gold cap) show the oils to be nearly identical. :)

The amounts of Molybdenum in both oils are the same (82ppm) so there will be no clutch problems with the new oil. The amount of anti-wear additives (zinc and phosphorous) are virtually the same. The amount of zinc in the new oil is down a few ppm's but the phosphorus is up a few ppms.

For those of us that fell in love with the old red cap fear not, the new gold cap EP 15w-50 is the same oil.

If someone would be willing to scan the analysis results and post on TT send me a pm with your fax number.


  • sirthumpalot

Posted July 05, 2005 - 04:16 PM


Check your PM's

  • Serenity Now

Posted July 05, 2005 - 05:57 PM


Why is the new Extended Performance about $1 more per quart than the old Red Cap if they are the same? Just curios as I want to justify having to pay that much for my oil. :)

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  • Vibeguy

Posted July 05, 2005 - 06:10 PM


How about Marketing 101, change the bottle, mark it up and they will purchase!

  • grayracer513

Posted July 05, 2005 - 07:13 PM


So you guys never saw this? (from a March thread on this subject);t=000408;p=

A used sample would tell me a lot more.

  • sirthumpalot

Posted July 06, 2005 - 03:39 AM


Heres a link to both reports:

Oil analisys results

The images are large (about 250kB each) so give them a minute to load.

  • sirthumpalot

Posted July 06, 2005 - 03:52 AM


I just skimmed that other thread, and I do see significant differences between the standard Mobil oil and the MX4T/v-twin. In particular, there is 36% more Phosperous and 32% more Zinc in the motorcycle specific oils. That's quite a large difference in those two materials.

In regards to the new and old Mobile oil described in the carts above; agreed they look to be the same! Marketing...

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