Doc's Diesel Filters are spec'd and designed to meet or exceed the quality/performance of the original filters (OEM's) that come in your vehicle. Doc's premium grade media filter paper used on all Doc's Filters is what sets Doc's above the rest.
We wanted to go one step further in customer trust by providing,SAE J1985 3rd Party Testing of our parts.We did a full upstream and downstream efficiency testing along with a single pass efficiency test method. Our main fuel filters have been 3rd party tested, and as we get more testing we will be reporting the results.
Worked just as stated. Better power and smoother running after adding standard dose to full fuel tank.
Great experience. Easy to shop. I didn’t understand why I was charged shipping since on the front page it was posted free shipping on orders over $99. My order was over that amount. ..
I was skeptical that fuel treatments would help. But now that I have been using them for about a year I have to say I am getting better fuel mileage by about 2 to 3 miles per gallon.
Diesel fuel treatment
Seems to work good really no complaints
So far so good
Seems to be a quality additive