M1 Full Syn MV ATF, 20,200 miles, AW70 Volvo 240

[Sam_Julier]

ATF: M1 Full Syn MV ATF
Time in service: 20,200 miles
Unit: Aisin Warner AW70
Vehicle: 1993 Volvo 240 B230F
Inline filter: Donaldson P550008, 40 micron
Sample taken for UOA only. Fluid and filter have not been changed.
Analysis done by JG Lubricant Services
Filter changed at 10,000 miles, 1 qt new fluid added
Capacity: 7.8 qts

Comments from JG: Acid Number does not indicate an immediate need for maintenance action. Continue to observe the trend and monitor. Acid number is slightly high, which may be due to contamination with an acidic product, extended drain interval, or lubricant mixing.

Sample Results
Iron / 19
Chromium / 0
Nickel / 0
Aluminum / 0
Copper / 0
Lead / 1
Tin / 1
Cadmium / 0
Silver / 0
Vanadium / 0
Silicon / 5
Sodium / 2
Potassium / 0
Titanium / 0
Molybdenum / 0
Antimony / 0
Manganese / 0
Lithum / 0
Boron / 162
Magnesium / 3
Calcium / 137
Barium / 0
Phosphorus / 385
Zinc / 12
Water / Viscosity 100C / 6.6
Acid Number / 1.19 mg (KOH/g)
Oxidation / 20 (abs/cm)
Nitration / 5 mm (abs/0.1)


MI Full Syn ATF MV has a 7.4 cSt specification. Volvo ATF OCI is 20,000 miles. I am planning a cooler line exchange, filter replacement, and UOA every 20k.

As always your comments are greatly appreciated. I am curious if a filter with a lower micron spec would help.

Sam

 

[Sam_Julier]

I did a 9 quart cooler line exchange with same ATF - old fluid had barely changed color. Would appreciate advice on acid number.

Sam