I went to tractor supply to get my coolant, Rotella ELC concentrate. Then, went to advance auto to pick up my fuel filters. While there, I saw they also had Rotella ELC concentrate. More expensive and not eligible for discount. But their bottle also said "NF". Nitrate free. Are these both the same stuff or are they different? And which is best for our 6.0?

 

The Rotella ELC Nitrite Free does not meet the CAT EC-1 rating that regular Rotella ELC does.

Specifications and Approvals
Shell ROTELLA® ELC NF meets industry required ASTM D3306, D4985 and D6210 and TMCRP 329 and RP 364 requirements. Shell ROTELLA® ELC NF is also suitable for the following applications:

Detroit Diesel 93K217
Cummins Medium and Heavy Duty On-Road Engines1
Mack Truck
Navistar MPAPS B-1 Type IIIA (formerly Int CEMS B-1)
PACCAR
Volvo TSI 184-001
Ford WSS-M97B44D
GM 6277M

 

Thanks! I read the label for the NF and didn't catch that. I've got the right stuff then.