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Some Oil Samples that Ron Fears (Laundry1)
had done at Blackstone Laboratories.
Elements in 
Parts per Million
Yamalube Castrol
Full Synthetic
OMC Ficht
Pennzoil
Premium Plus
Quicksilver Lucas SemiSyn
Aluminum 0 0 0 0 0 0
Chromium 0 0 0 0 0 0
Iron 1 0 1 1 1 1
Copper 0 0 0 0 0 0
Lead 0 0 0 0 0 0
Tin 0 1 0 0 0 0
Molybdenum 730 0 0 0 1 1
Nickel 0 0 0 0 0 0
Manganese 0 0 0 0 0 0
Silver 0 0 0 0 0 0
Titanium 0 0 0 0 0 0
Potassium 0 0 1 1 1 0
Boron 16 0 1 4 12 0
Silicon 6 0 0 0 1 0
Sodium 3 2 2 2 1 1
Calcium 18 0 1 0 1 238
Magnesium 1 0 0 0 1 0
Phosphorous 226 1 0 0 2 0
Zinc 13 3 2 3 20 4
Barium 0 0 0 0 0 0
             

Flashpoint in
Degrees F.

235 390 200 235 170 240
             

COMMENTS -

Yamalube This oil contained the most additive of the six you sent in, so it wins in that department.
As long as the additives are ashless (as we assume they are), then these will not hurt anything.  Molybdenum is probably an anti-wear additive, though we can't say for sure.
We are sure what the boron, calcium, phosphorous and zinc are for though, they are additives as well. No moisture or insolubles were found.
Castrol
Full Synthetic
We did not find much here in the way of additives either. As stated before, this is a common find, and we don't consider it a problem. As far as these oils go, Yamalube has the most additive, so if that's an important criteria (as we are not sure it is), then we think that this is the best value. There isn't much difference between the others, so I would probably go with whichever one was cheapest price-wise. No moisture or insolubles were found.
OMC Ficht This oil did not have much present in the way of additives either. No moisture or insolubles were found.
Pennzoil
Premium Plus
This oil has only traces of additive present.  No moisture or insolubles were found.
Quicksilver 2-cycle oil is generally a 20W oil and that's what we found in all of these samples, so we don't think viscosity is a factor.  We don't normally see additive in these oils, though some of these do have some present.  Additive probably doesn't hurt anything, though since the oil gets burned, there may be a possibility of the additive leaving deposits in the combustion chamber, unless they are ashless.  Only a little boron and zinc showed up here.  No moisture or insolubles (solid material) were found.  We can't tell the difference between synthetic or non-synthetic oil.
Lucas SemiSyn Calcium was the only significant find in this sample.  No moisture or insolubles were found.  This was the only oil without a blue/green dye.

Sample Date: 06/16/04
Blackstone Laboratories
4929 S. Lafayette Street
Fort Wayne, IN 46806