can someone explain the difference between these?

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Can you enlighten us as to the application in which you're going to use the oil? It would certainly help us make more intelligent comments on which one is better suited.
 
Originally Posted By: scurvy
Can you enlighten us as to the application in which you're going to use the oil? It would certainly help us make more intelligent comments on which one is better suited.


Sure...my wife's 2004 Nissan Maxima. From reading on BITOG; the Nissan VQ35 is hard on engines. For this reason a lot of folks run Mobil 0w40 with good results. I consider running Mobil 0w40 as well. However, I just recently became an Amsoil PC. For this reason I was considering the two Amsoil offerings of 5w40. The full saps offering is less expensive than M1 0w40 at Walmart. The low saps Amsoil is still more expensive however.
 
I don't think you'll be needing a low SAPS oil for that application. That's more of an issue in meeting certain European specifications. All you'll be needing is likely SM/GF-4 or better in a 5w30, at least according to the manual. Aside from what the manual requires, something like M1 0w-40 or the Amsoil equivalent in 5w-40 would work as well, and I would choose one of them over a low SAPS oil, since such an oil is not even an issue with the engine.
 
Good deal Garak. In that case, I'm going with the Amsoil. Might as well take advantage of my PC benefits. I will do an UOA at 5k miles with it I think. I'd be surprised if any of the the affore mentioned oils don't perform.
 
One thing about low SAPs oil that I've often wondered about. Are they aimed more at protecting the cats or are they aimed at diesels and performance/life of the DPF?
 
I'm using a low ash (not sure about SAPS) oil because my car burns oil and I want to keep deposits under control. Just my $0.02.
 
Originally Posted By: uart
Are they aimed more at protecting the cats or are they aimed at diesels and performance/life of the DPF?


I believed they are more aimed at the latter, but I would suspect they could help protect the cats, too. I've always found it interesting how people call GF-4 and GF-5 watered down because of reduced ZDDP levels and praise ACEA specifications, yet conveniently ignore that certain ACEA specs accomplish much the same in the reduction of phosphorous. Heck, some of those lubes' specs on ZDDP and TBN make PYB SN/GF-5 look like an HDEO.
wink.gif
 
Thanks Garak. That's pretty much what I thought, they're mostly meant to help vehicles with a DPF.

So I guess they wouldn't offer any particular benefit over regular API sm/sn oils in a typical petrol (gas) engine. ???
 
Originally Posted By: 04SVT
Sure...my wife's 2004 Nissan Maxima.
...
The full saps offering is less expensive than M1 0w40 at Walmart. The low saps Amsoil is still more expensive however.


No need for a low SAPS oil in that application. Try out the EFM and let us know how it works for you.
 
Originally Posted By: uart
So I guess they wouldn't offer any particular benefit over regular API sm/sn oils in a typical petrol (gas) engine. ???


I wouldn't think so. I wonder if any low SAPS oils also happen to meet SN/GF-5. I would imagine it's possible, assuming their HTHS isn't too high. If that were the case, I'm sure they'd be okay, other than ridiculous cost. You guys pay enough for a vanilla synthetic, let alone something that's likely going to be had only at dealers.
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