I copied these three samples from the VOA forum. I restricted myself to 5W30 because that's the only weight that ST was tested in:
SuperTech 5w30
copper 0
iron 0
chromium 0
lead 0
sodium 0
boron 0
Aluminum 1
Molybendum 55
Phospherous 1122
Zinc 1090
Magnesium 4
Calcium 1934
Viscosity cst 10.50
sae/iso 30w
Castrol GTX 5W30 VOA:
Aluminum 1
Molybdenum 53
Potassium 1
Boron 2
Silicon 5
Sodium 1
Calcium 1720
Magnesium 3
Phosphorus 716
Zinc 801
(All other numbers 0)
SUS @210 =61.2
Flashpoint =440
TBN =9.5
Royal Purple 5W30
Copper 0
Iron 0
Chromium 0
Lead 0
Aluminum 1
Silicon 2
Tin 0
Moly 112
Sodium 0
Magnesium 11
Zinc 867
Potassium 0
Phosphorus 786
Calcium 1670
TBN 8
Viscosity 11.4
I know that there was also another inferior ST UOA although the lab said the figures were as expected. To my untrained eye, SuperTech looks to have a stronger additive package than Castrol and compares fairly well to Royal Purple.
I'm currently running ST10W30. I know that the real answer is that there simply isn't enough real world experience to make a judgement. I'll be running ST for slightly more than 4K on a vacation trip during the next week. I should probably kick in for a UOA but in fact this stuff shouldn't be around for too much longer anyway once the Shreveport plant is closed.
SuperTech--really crap? Splain this!
- Thread starter csandste
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I think is a lot more to motor oil than virgin metal element analysis.
I've been using the ST 10w30 in my wife's Jeep,and I just started using the 15w40 in our other Cherokee,after using 10w30 in it.I use the ST filters and have had what I call good results...no sludge,cleans very well,doesn't drop oil pressure,doesn't seem to thin out.I've been doing my usual 3mo/3K service intervals.Seems like a very good oil,especially for the price.Hopfully it will stay the same formula after Shreveport closes.
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