1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 3 2016 09 22 Revised pH, See Summary of Revisions A. Reaume, NA 2015 09 28 Editorial See Summary of Revisions A. Reaume, NA 2011 11 03 Activated A. Reaume, FNA Controlled document at www.MATS Copyright 2016, Ford Global Technologies, LLC
2、 Page 1 of 2 WATER QUALITY, INITIAL FILL - ENGINE COOLANT WSS-M99P25-C 1. SCOPE The water defined by this specification is intended to provide a guideline for water purity used with engine coolants. 2. APPLICATION This specification was released originally for potable water which, when mixed with co
3、ncentrated engine coolant, will not cause precipitation of corrosion inhibitors. This specification is for both initial fill and service use. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification is performance based and does not have approved sources. 3.2 CHLORIDE 40 ppm (mg/L) max (EPA 9056 or e
4、quivalent) 3.3 SULFATE 100 ppm (mg/L) max (EPA 9056 or equivalent) 3.4 TOTAL HARDNESS (as CaCO3) 170 ppm (mg/L) max (ASTM D 1126 or equivalent) 3.5 IRON 1 ppm (mg/L) max (EPA 6010B or equivalent) 3.6 OTHER METALS (Excluding Na, Ca, Mg and K), 1 ppm (mg/L) max (EPA 6010B or equivalent, max per metal)
5、 Vehicle Operations (VO) plants Report only 3.7 SULFIDE 1 ppm (mg/L) max (EPA 9030B or equivalent) If sulfides are not measured analytically a fresh water sample shall have no detectable “rotten egg” odor. 3.8 TOTAL DISSOLVED SOLIDS 340 ppm (mg/L) max (EPA 160.1 or equivalent) ENGINEERING MATERIAL S
6、PECIFICATION WSS-M99P25-C Copyright 2016, Ford Global Technologies, LLC Page 2 of 2 3.9 pH 5.5 8.5 (EPA 9040C or equivalent) 3.10 SPECIFIC CONDUCTIVITY 400 uS/cm, max (EPA 9050A or equivalent) 3.11 PARTICULATES Particulate solids above 100 micrometers must be filtered using an inline water filter. 4
7、 GENERAL INFORMATION This information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 RESPONSIBILITY Each Vehicle Operations (VO) plant is responsible for achieving
8、 the requirements contained in this specification, with the exception of Section 3.6 Other Metals for which is report only, according to their own incoming water quality. Reference VOPQUN-236 Surveillance and Control of Fluids. 5. SUMMARY OF REVISIONS 2016 09 22 Revised 3.9 pH from 6.0 - 9.0 to 5.5 - 8.5. Removed WSS-M99P1111-A. 2015 09 28 Editorial Added excluding to section 3.6 2014 05 16 Added 3.6 statement regarding VO plants Added 4.1 statement regarding exception of section 3.6 Other Metals.
