Mobil 1 5W-30 Supersyn

[wtd]

Here are the results of 5w30 Mobil 1 Supersyn in my 98 chevy Silverado Z71 with the 5.7L. Oil had 3,002 miles on it and truck had 45,374 miles on it. I added 0.5qts during this period. I used a UPF52 AC-Delco oil filter. Blackstone Labs did the analysis. The supersyn results will be the first number and the Trisynthetic will be the second. Here are their comments.

WAYNE: Nothing too unusual turned up in this sample from your Silverado. Wear levels dropped once again and now show a very nicely wearing GM engine. Silicon, which is left over sealers from the factory, is almost normal at 20 ppm. No moisture, fuel, or antifreeze was found in the oil. Insolubles(oil oxidation due to heat, use and blow-by) were fine at 0.5%, showing good oil filtration and complete combustion. If your're interested in extending your oil use interval, we suggest trying 4,000 miles for the next oil change.

Aluminum 5--4
chromium 1--3
iron 11--18
copper 2--5
lead 9--43
tin 1--5
molybdenum 66--3
nickel 0--1
manganese 0--1
silver 0--0
titanium 0--0
potassium 0--3
boron 133--57
silicon 20--28
sodium 8--7
calcium 2603--861
magnesium 83--1432
phosphorus 712--621
zinc 838--766
barium 0--0

SuS viscosity @210*F 59.7--61.8
Flashpoint in *F 360--420 degrees
fuel% antifreeze% 0.0--0.0
water% 0.0--0.0
insolubles% 0.5--0.5

This analysis is the best one so far but I'm wondering about a couple of things. The magnesium amount of 83 in this sample is way below the 1432 amount in the Tri-synthetic sample. The Flashpoint of 360 degrees is quite a bit lower than the 420 degrees of the Tri-synthetic. Lead levels are way down from the previous sample and of course there is quite a bit more Moly in the Supersyn compared to the Tri-synthetic.

Wayne

 

[wtd]

I did forget to mention that the truck used about a quart of oil in the 3,000 miles compared to the 0.5 qrts using the Tri-synthetic. During this last oil run, I had to add a half a quart about half way through and when I changed the oil, it was a half a quart low again. I'm not sure what this means but I'm not real happy with the increased oil usage.

Wayne

 

[Al]

I would defenitely go with the 10w30 Mobil, If you are planning on staying with it. Still the drop in the Pb is a good sign.

 

[MavRick]

That flash point is low,lower than conventional when I tested at Blackstone labs. I wonder if this has something to do with the oil usage? What are your driving conditions? If the flashpoint is correct, then I think it suggests you are getting fuel in the oil, but the sample didn't show any. It could be just a bad reading.

 

[Patman]

The lead numbers are way down, nice!! The reason you see the magnesium change is because TriSynthetic was loaded with magnesium while SuperSyn has little to none in there. So nothing to worry about there, it's normal.

 

[sprintman]

Patman
what do you think of the Supersyn M1 in general?
Been a huge change in forum attitude over the last few months?

 

[Patman]

Sprintman, I think the new SuperSyn stuff is great! I hated it at first, but after seeing so many reports now with lower engine wear than on Tri-Synthetic, I agree that it's better than ever. It also shows that their 5w30 doesn't thin out anymore like Tri-Synthetic did.

 

[wtd]

After thinking about it, I think my increased oil usage was the result of quite a bit of towing during this period and the fact that I always tow in drive instead of overdrive which results in the engine turning at higher RPM's. I also was using drive quite a bit when I wasn't towing because overdrive was feeling sluggish. I'm back to using overdrive when I'm not towing so I'll see if my oil usage goes back down.

Wayne