Opti-Lube XPD All-Season Diesel Fuel Additive, 1 Gallon

Slap: This stuff is great, but the bottle leaked all out into the bag and box. I contacted the seller and they had me provide a picture of this and then they sent me another bottle. Very happy!

United States on Nov 14, 2023

BLA: My pickup likes this stuff. Just seems to run great and chug along happy. I don't pay a ton of attention to mileage, but it gets over 20 mpg at 65 mph on long trips with this stuff in the tank. Stock 6.4 powerstroke with 230000 miles. Still going strong.

United States on May 30, 2023

Daniel BerryDaniel Berry: I've used the XPD products for many years now, which is especially critical when using low sulfur fuels. On my recent order, I noticed a small leak, even though the shipping box showed no obvious damage. Fortunately I found it before I putting the container away in my storage building. Always a good idea to check for concealed damage.

United States on May 27, 2023

Joseph Penta: Buying a whole gallon of fuel additive may seem like overkill, but it last for months, and works out to just pennies per gallon treated. I picked up about 2 mpg (37 to 39 on a 2013 jetta sportwagen) and am far less worried about injection pump failure.

United States on Mar 17, 2023

Sasha: Love the XPD. But paying over $50 to ship a gallon to me just isn’t right. Need to find a solution for this please.

Canada on Feb 22, 2023

JeremyG: I just switched over to this. And the switch corresponded with a 1300 mile round trip. So, I figured I'd test it.

I did not use the truck's MPG readout (my truck doesn't even have it). I filled to the top, zeroed the Trip-ometor, and when I filled it back up, calculated by total miles driven vs. gallons used.

650 miles on the way TO my destination, using the stuff I got at AutoZone 16.84mpg
I then ran it out of fuel while I was AT my destination and started putting Opti-Lube in. By the time I started my return trip, I am positive that ONLY Opti-Lube was in my tank.
650 miles on the way BACK FROM my destination 18.23mpg

This was on the same highway, just going the opposite way. Mostly North/South thru Illinois so not a lot of hills - mostly flat.

That's a 1.39mpg improvement, instantly. That's somewhere around 8% improvement!

Vehicle: 2006 Ford F250 XL with 6.0 Powerstroke.
Driving Habits: This was almost exclusively highway, except for pit stops for restroom, food, and fuel. Of the 650 miles, maybe 30-40 were not Interstate.

I can also say that I'm now getting about 16.8mpg in mixed driving (almost 50/50 highway and city) when I...

United States on Sep 24, 2018

Matt: I am only giving it 3 out of 5 stars because of the total cost I ended up paying...the cost of the product it self is reasonable but since I live in Canada the shipping cost was very high and then I got a bill in the mail from Fed Ex for another $42 for customs fees, etc. My 2001 Ram 2500 24 Valve Cummins seems to really like this additive but for a total cost of $155 for a gallon I definitely won't be ordering it again. I'll stick with the Power Service and 2 stroke oil mix I've been using for the past 10 years with great results.

Canada on Oct 04, 2017