There was one technical service bulletin issued for the 2012 Caterpillar CT681.
| Bulletin Date: | Nov. 10, 2016 |
| Component: | Engine (pws). |
| Bulletin Summary: | Extended life coolant (elc) exhibiting nitrite depletion in machines equipped with aluminum radiators-nitrites in extended life coolant (elc) can react with the aluminum cooler to produce elevated ph and low nitrite levels in schedule oil s |
| Vehicles covered in this TSB: |
2012 Caterpillar CT660,
2013 Caterpillar CT660,
2014 Caterpillar CT660,
2015 Caterpillar CT660,
2016 Caterpillar CT660,
2017 Caterpillar CT660,
2012 Caterpillar CT680,
2013 Caterpillar CT680,
2014 Caterpillar CT680,
2015 Caterpillar CT680,
2016 Caterpillar CT680,
2017 Caterpillar CT680,
2012 Caterpillar CT681,
2013 Caterpillar CT681,
2014 Caterpillar CT681,
2015 Caterpillar CT681,
2016 Caterpillar CT681,
2017 Caterpillar CT681.
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