Below are 5 oil analysis reports of G-Oil from:
(1) Petroleum Quality Institute of America (VOA)
(2a) Wear Check (April VOA)
(2b) Wear Check (May VOA)
(3) Wear Check (Oct used oil analysis - Overheated Engine)
(4) Wear Check (Nov used oil analysis)
G-Oil VOA's have been controversial. The PQIA virgin oil analysis (sample #1) posted below appears at URL:
http://www.pqiamerica.com/January2012A/January2012R2/goil.htm. In April of 2012, I submitted a VOA sample (#2a) to Wear Check and received questionable results that did not match the PQIA analysis.
In May, I asked Wear Check to retest the original sample that I had sent to them. The results (#2b) were closer to that measured by PQIA. This produced a storm of controversy in this thread:
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2612937#Post2612937. Other VOA's of G-Oil with different formulations have appeared in this forum (i.e.,
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2740477#Post2740477).
My October used oil analysis sample (#3) below was obtained following a coolant leak. On October 3, 2012, I stopped for a gas fill-up, noted the mileage and proceeded onto the highway. There was nothing amiss during the fill-up. 14 miles later, I noticed the engine overheating and pulled over. A coolant hose had burst and steam rose from the engine compartment. At that point, the G-Oil only had 493miles on it. After making repairs, I completed my trip home and submitted a used oil analysis with 940 miles on the oil. Sample (#4) was the new oil that replaced the overheated sample (#3) and has 943 miles.
A comparison of samples (#3) and (#4) contrasts the overheated oil (#3) with non-overheated oil (#4). Both are used oil analysis.
Code:
SAMPLE (#1) (#2a) (#2b) (#3) (#4)
SAMPLE TYPE VOA VOA VOA used oil analysis used oil analysis
MILES 0 0 0 940 943
Jan April May Oct Nov
WEAR WEAR WEAR WEAR
CONTAMINANT PQIA CHECK CHECK CHECK CHECK
Silicon 4 6.5 4.6 9.2 5.8
Potassium 8 24 0.0 0.0 1.6
Sodium 10 5.3 3.4 9.8 3.9
Fuel (%) --
Glycol -- -- -- -- --
Water (%) --
Soot (%) -- -- -- 0.1 0.1
Sulfation -- -- -- 83 87
Nitration -- -- -- 8 8
April May Oct Nov
OIL WEAR WEAR WEAR WEAR
CONDITION PQIA CHECK CHECK CHECK CHECK
Boron 215 358 227 64 75
Barium
Calcium 1966 3782 2374 3895 3938
Magnesium 8 21 11 8.0 13
Molybdenum 74 113 72 113 124
Sodium 10 5.3 3.4 9.8 3.9
Phosphorus 676 1247 787 835 855
Sulfur 2695 5291 3142 2559 2589
Zinc 762 1257 843 954 941
Visc@40C 54.9 55.78 55.78 -- --
Visc@100C 10.0 9.77 9.77 9.73 9.75
VI 172 161 161 -- --
Oxidation -- -- -- 119 128
TAN -- 1.44 1.44 1.74 2.05
TBN 7.2 -- -- -- --
April May Oct Nov
WEAR WEAR WEAR WEAR
WEAR PQIA CHECK CHECK CHECK CHECK
PQ -- -- -- -- --
Iron
Nickel
Chromium
Titanium
Copper
Aluminum 2 3.7 1.7 7.0 4.4
Tin
Lead
The amount of contaminants, such as silicon and sodium, are higher in the overheated oil (#3) than in the non-overheated oil (#4). Wear indicators, such as the amount of metals, appear slightly higher in the overheated oil (#3) than in the non-overheated oil (#4).
