Hi guys,
Do the NMMA oils have a tacky additive to assist in 'sticking' to internal components?
Most locally available HDEO 15w40's have similar ZDDP's (1300 ppm) to the NMMA 25w40 that I currently use, whereas the 10 Tenths Racing 15w50 has significantly more (1680 ppm), high VI, PAO/ ester...