M1 5-30 still rocks after 6800 miles in 6.8 ford

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This is an easy one to spot, even for me. Take a look at the additive levels of Ca, Zn, and P in the current sample vs your previous one. They are much lower. The additive pack was not up to protecting the valve train/upper cylinder as the previous oil(M1 5W-30 also?). That's my best guess at why the elevated Fe and Al numbers. The API starburst is the sign of the Devel! Repent! Join the Church of RAP. (Real Additive Package). Ed
 
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I agree with Ed, Iron is too high. Is their a correlation between the recent Mobil 1 with less then 700ppm of P and 900ppm of zinc and high iron? Seems to be that way. [No no] Ray, mix in some M1R for extra ZDP or try Amsoil and see if this makes a difference. [ March 03, 2004, 07:57 PM: Message edited by: buster ]
 

V10Ray

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Could the increase in Iron just be from short trips in the coldest part of the winter? I work 2 miles from my house, thats what I call a short trip. What should I expect from this level of abuse? And where do I get M1R? Ray
 

V10Ray

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I posted the Blackstone report in UOA section but didn't type in the report so it got moved to interesting articles. Sorry didn't mean to get 2 threads going about this. Just wanted to post the report for peoples research and here to discuss how the M1 is doing a good job for my engine even though the Fe is higher than expected. Ray
 
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Ray, the increased wear could indeed be from the winter operation. The numbers aren't really that bad when you take the size of the engine and number of cylinders into account. I think there are other 5W-30 synthetics out there that might bring those Fe numbers down, if that is your goal. If this were my vehicle, and I were operating it as you do, I would be using AMSOIL HDD 5W-30. Just My $0.02, and that's probably all it's worth even with inflation. [Smile] Ed
 
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