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UOA Amsoil MCF 10W-40. BMW K1600 #4976557 01/11/19 10:23 PM
Joined: Mar 2011
Posts: 103
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atc250r Offline OP
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High lead is concerning me. Bike is parked for the winter, but I’ll put on miles in spring and see what happens with the next UOA. Comments?


621BD7FF-3117-4BA6-808D-8EB9F2F8DD9A.jpeg
Last edited by atc250r; 01/11/19 10:25 PM.
Re: UOA Amsoil MCF 10W-40. BMW K1600 [Re: atc250r] #4976588 01/11/19 11:08 PM
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Trav Offline
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Yes lead is a little high may be try Castrol 10w50. This may make it easier to read.

621BD7FF-3117-4BA6-808D-8EB9F2F8DD9A.jpeg

ASE L1, Master. Deutsch Meisterbrief.
Re: UOA Amsoil MCF 10W-40. BMW K1600 [Re: atc250r] #4976595 01/11/19 11:14 PM
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atc250r Offline OP
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Thanks for the rotation

Re: UOA Amsoil MCF 10W-40. BMW K1600 [Re: atc250r] #4976941 01/12/19 12:24 PM
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Bonz Offline
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That’s a big dose of calcium and good numbers for zinc and phosphorus too.

Still wanting/trying to learn when/why calcium (3300 ppm) would be in that high of a quantity (with basically no magnesium) vs a combo of calcium and magnesium.

Mobil 1 10w40 4T runs 2000 ppm of calcium with a similar non existence of magnesium, but a decent amount of boron (162 ppm) vs basically no boron in the Amsoil. M1, by my UOA shows 1155 ppm zinc, 1007 ppm phosphorus vs the higher Amsoil numbers in the original post.

Does the presence of boron in the M1 offset the lower calcium as a detergent or does the boron help offset the lower Z/P numbers in M1 for wear protection? Both?

When I read about boron, it seems to be an anti-wear additive but also is said to have cleaning properties, but is always in lower concentrations than the other additives it may or may not be used in place of for detergency and/or anti-wear.

Thoughts?



Last edited by Bonz; 01/12/19 12:27 PM.
Re: UOA Amsoil MCF 10W-40. BMW K1600 [Re: atc250r] #4980713 01/16/19 06:44 AM
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alarmguy Offline
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Nice report, yeah, I guess if it was me seeing the lead might be a little upsetting.

If it was me, I think I would just forget about it until the next change and see what happens at the next report, since this is your first report in almost 50,000 miles you have no idea as it could have been 3 times higher and has come down very much and still coming down over the last 20,000 miles, or it could be going up too.

Either way, I wouldnt lose sleep over it since you have no history with the reports, not only that but you cant do anything to fix the higher then normal lead.

Im not big on any brand of oil, the reasons we pick oils are because of marketing and I respect Amsoil a lot but I hate the fact they put so much calcium in their oil as I do not extend oil changes and no reason for it to be there.
Im also not big on spending a lot of money on oil, to me its all marketing, I pick the right "API" and I am done, heck I still use mostly conventional/semi syn because no one has ever proved to me lower wear numbers (and I have some of the lowest) and again, I change my oil at the recommended intervals and less.

Last edited by alarmguy; 01/16/19 06:49 AM.

14 Road King (current)
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Re: UOA Amsoil MCF 10W-40. BMW K1600 [Re: alarmguy] #4982921 01/17/19 09:19 PM
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atc250r Offline OP
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Originally Posted by alarmguy
Nice report, yeah, I guess if it was me seeing the lead might be a little upsetting.

If it was me, I think I would just forget about it until the next change and see what happens at the next report, since this is your first report in almost 50,000 miles you have no idea as it could have been 3 times higher and has come down very much and still coming down over the last 20,000 miles, or it could be going up too.

Either way, I wouldnt lose sleep over it since you have no history with the reports, not only that but you cant do anything to fix the higher then normal lead.

Im not big on any brand of oil, the reasons we pick oils are because of marketing and I respect Amsoil a lot but I hate the fact they put so much calcium in their oil as I do not extend oil changes and no reason for it to be there.
Im also not big on spending a lot of money on oil, to me its all marketing, I pick the right "API" and I am done, heck I still use mostly conventional/semi syn because no one has ever proved to me lower wear numbers (and I have some of the lowest) and again, I change my oil at the recommended intervals and less.


Good point. Yes, I will put on some miles in spring and get another UOA done ASAP.

Re: UOA Amsoil MCF 10W-40. BMW K1600 [Re: Bonz] #4983473 01/18/19 12:52 PM
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Bonz Offline
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Originally Posted by Bonz
That’s a big dose of calcium and good numbers for zinc and phosphorus too.

Still wanting/trying to learn when/why calcium (3300 ppm) would be in that high of a quantity (with basically no magnesium) vs a combo of calcium and magnesium.

Mobil 1 10w40 4T runs 2000 ppm of calcium with a similar non existence of magnesium, but a decent amount of boron (162 ppm) vs basically no boron in the Amsoil. M1, by my UOA shows 1155 ppm zinc, 1007 ppm phosphorus vs the higher Amsoil numbers in the original post.

Does the presence of boron in the M1 offset the lower calcium as a detergent or does the boron help offset the lower Z/P numbers in M1 for wear protection? Both?

When I read about boron, it seems to be an anti-wear additive but also is said to have cleaning properties, but is always in lower concentrations than the other additives it may or may not be used in place of for detergency and/or anti-wear.

Thoughts?




From what alarmguy said I take it to mean calcium helps extend drain intervals by keeping good cleaning additives in there (higher TBN).

How about the balance of the additives like boron, magnesium, calcium when used in different quantities like I asked in the quoted post? Can anyone weigh in on it? Why boron vs more calcium, etc.

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