Richard,
That was a great site for information, however can anyone tell me the difference of the 'green' and 'red' coolant other than the formula. What I have found is that when we had an 'inframe' overhaul done to our 6V92TA about 1999-2000 the shop put in 'green' coolant. Not knowing anything about these types of diesel engines, and the shop being a major DD/Allison listed shop, I figured they knew what they were doing. Recently, we had the radiator flushed and coolant replaced and we were asked if we wanted 'green' or 'red'? I told them to put what was originally in the radiator, which was 'green'. In doing research, I found DD recommends 'Power Cool', which is 'red'. Now, I am wondering if I have 'screwed the pooch' in trusting a DD shop instead of doing my due diligence before hand.
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