Hello everyone,
As part of the 60,000 mile service on my 2003 Lexus GS-430 (which I actually performed a bit early), I had the Engine Oil, Transmission Fluid, Antifreeze, and Differential oil analyzed. This posting is on the results for the Antifreeze. Note this is the first time I have had the coolant analyzed, so I don't have any reports other than this one.
The report was flagged as abnormal, but I think this is due to a mistake on my part (which I will explain below). Please take a look at these results and let me know what you think - Although I am familiar with UOAs, I am unfamiliar with interpreting coolant analysis results.
The vehicle this coolant was used in is a 2003 Lexus GS 430. The coolant was in use for 31,329 miles, and about 28 months.
Iron: < 1
Chromium: < 1
Aluminum: 15
Lead: < 1
Copper: < 1
Silver: 0.1
Silicon: 23
Boron: < 1
Sodium: > 999
Potassium: > 999
Molybdenum: 843
Phosphorus: 1607
Zinc: < 1
Calcium: < 10
Barium: < 10
Magnesium: < 1
pH: 7.3
NITR, ppm: 600
Freeze Pt., F: -35
A/F %: 51
Visual Color: Red
Visual Appear.: Clear
ELC CORR INHIBIT: FAIL
The report was flagged as ABNORMAL because of the ELC CORR INHIBIT level. I suspect this is because that test assumes an Extended Life Antifreeze (i.e., the stuff that is supposed to last 100,000+ miles) is in use. This sample represents REGULAR antifreeze - Toyota recommends changing every two years, every 30K miles or so. In other words, for those of you familiar with Toyota factory coolants, this is the regular Red Long Life Coolant, NOT the "Super Long Life" Pink stuff.
Assuming I am correct, could I have gone longer on this coolant? I am particularly unsure how to interpret the NITR and pH results.
Thanks...
As part of the 60,000 mile service on my 2003 Lexus GS-430 (which I actually performed a bit early), I had the Engine Oil, Transmission Fluid, Antifreeze, and Differential oil analyzed. This posting is on the results for the Antifreeze. Note this is the first time I have had the coolant analyzed, so I don't have any reports other than this one.
The report was flagged as abnormal, but I think this is due to a mistake on my part (which I will explain below). Please take a look at these results and let me know what you think - Although I am familiar with UOAs, I am unfamiliar with interpreting coolant analysis results.
The vehicle this coolant was used in is a 2003 Lexus GS 430. The coolant was in use for 31,329 miles, and about 28 months.
Iron: < 1
Chromium: < 1
Aluminum: 15
Lead: < 1
Copper: < 1
Silver: 0.1
Silicon: 23
Boron: < 1
Sodium: > 999
Potassium: > 999
Molybdenum: 843
Phosphorus: 1607
Zinc: < 1
Calcium: < 10
Barium: < 10
Magnesium: < 1
pH: 7.3
NITR, ppm: 600
Freeze Pt., F: -35
A/F %: 51
Visual Color: Red
Visual Appear.: Clear
ELC CORR INHIBIT: FAIL
The report was flagged as ABNORMAL because of the ELC CORR INHIBIT level. I suspect this is because that test assumes an Extended Life Antifreeze (i.e., the stuff that is supposed to last 100,000+ miles) is in use. This sample represents REGULAR antifreeze - Toyota recommends changing every two years, every 30K miles or so. In other words, for those of you familiar with Toyota factory coolants, this is the regular Red Long Life Coolant, NOT the "Super Long Life" Pink stuff.
Assuming I am correct, could I have gone longer on this coolant? I am particularly unsure how to interpret the NITR and pH results.
Thanks...