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| Mobil 1 & Amsoil ILSAC GF-5/API SN
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Level 3 - 101 to 250 posts |
Within the past two weeks, we've been able to see the new SN oils from Mobil and Amsoil. Very different additive packages.
Mobil 1 Moly 77 Boron 92 Calcium 1015 Mg 746 P 675 zinc 812 Tbn 9.3 Amsoil SS Moly 130 Boron 232 Calcium 3251 Mg 12 P 652 Zinc 763 Tbn 12.6 Mobil 1 is using Mg, which I thought was going away for good in PCM's. Amsoil now looks like Mobil 1 from 2005. |
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Level 5 - 501 to 1000 posts |
Wow, that is a leap in logic! You compare 6 elements and TBN value, and know nothing of the other elements, chemical additives, base oils and performance. The total package performance can better be compared with standard ASTM tests, recommended oil change intervals, and warranty coverage, in which AMSOIL always trumps Mobil 1, for the past 36 years. The additive packages are different because AMSOIL Signature Series is a 25,000 mile/1 year oil and Mobil 1 EP is a 15,000 mile/1 year oil, and Mobil 1 is a 10,000 mile/1 year oil. This message has been edited. Last edited by: Tim Vipond, |
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Level 3 - 101 to 250 posts |
Tim, I actually agree with you partially.
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Level 3 - 101 to 250 posts |
Hey Buster, been a long time . Just a quick post then off i go but >>>>
Looks like Mobil is using a different dispersant/ detergent pack , similar to what Maxima has been using in their <10w-40 Extra> for years now. Lower starting TBN that hangs in longer and all that goes with it, less the viscosity of course. Perhaps starting vi @100c will trend lower as well as phos amounts are lowered. Sulphonates out-Salicylates in ? |
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Level 3 - 101 to 250 posts |
I forgot to ask , was the starting TAN kinda on the high side?
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Level 3 - 101 to 250 posts |
Hi Motorbike, good hearing from you. I thought the TAN was high too. Thanks for the tid bit on Maxima. Interesting. I agree with what you said about the detergent/dispersant.
With lower sulfer levels in fuel, blowby will be less acidic so lower TBN is ok. TBN retention is more important though so it should be interesting to see how it holds up. The sulfated ash is lower with he Mobil formulation. This message has been edited. Last edited by: Buster, |
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Level 1 - 1 to 50 posts |
Up to TIM . It is UP TO miles or year. |
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