Quaker State Defy High Mileage SAE 10W-30 Syn Blend Motor Oil, 1.25 gal

from paul

most engine oil is eliminating zinc and phosphorous because they damage the catalytic converters on newer cars. but i have an inline 6 cylinder which needs the zinc and phosphorous which are actually beneficial agents in lengthening the life of a motor. the benefits of this oil are zinc and phosp...

from spitt56

Great product at a good price

from Griswald

I have been using Quaker State Defy products since they came out, it has been a great product for my fleet, many of my vehicles are getting over 300 thousand miles without any major repairs, one has made it to 589 thousand on the original engine and still has no major repairs done to it. I will k...

from M269

This stuff is incredible because it performs equally well in the freezing cold or the boiling heat vacuum of my state. I have a delivery service and really put a huge daily pounding on my vehicle but this oil has always met the challenge and, in my opinion, is the most dependable oil on Earth!

from 20phat

Always work like a