Ok i know u guys call them navaras but basically its tge same thing i bought a 05 frontier "navara' and it has 160,000 miles on it. Iv gotten worried about the many many problems of this vehicle. My main 2 im worried about is the timing chain whistling soubd wich just started and the transmission fluid being mixed with coolant. Sooo my question could yal give me direction on to fixing these. Also... transmission did slip this morning but it was 30°f . Also would a radiator sealer help this problem. A product such as bars leak