“Since adding NNL 690 to my truck engine my fuel economy has improved 1/2 mile to the gallon from 5.9 miles per gallon to 6.4 miles per gallon. In the past, on cold mornings, I had problems with the truck starting up. Now with the addition of NNL 690 it starts right up every morning, even in temperatures as low as 0 degrees F.“
Kevin Lovell, K&S Trucking, Yuma, Colorado

“The motor is a custom Perkins V8 that is 640 cu.in. making over 3000 horsepower. That kind of power is real hard on the internal motor parts but when I use NNL 690 in my oil, I see a much longer life out of the parts. I also use NNL 690G in the rear end of the tractor because with the front end of the tractor off the ground all the time I have to steer it down the track with the brakes and with NNL 690G it frees up the rear end so I do not have to use the brakes as much as I did before. “ Robby Crutchfield, Massey Ferguson SS Pull Tractor, Liberty, NC