- Opti-Lube XPD All-Season Diesel Fuel Additive - 4oz Bottles (24 Pack Case)

Works as stated and will purchase again

This thing is like magic, I use it in my Hilux 2.8 Turbodiesel, I had this vehicle for 5 years and always filled my tank locally (Mexican Diesel), after a few minutes of using this additive for the first time. It was like a new car, les noise, much smoother throttle. I am getting around 10-15% better milage. I can honestly say that at least with mexican diesel, this does wonders.

Best on the market for fuel system

400k miles on a 2019 Powerstroke. I add a bottle with every fill up which might be overkill but the CP4 and injectors must be good bc it crancks right up daily. Be ready to change the lower fuel filter more often bc the OptiLube gets way more gunk out of your fuel making the filter more effective. I use it in my diesel SxS, John Deere tractor and Ford trucks. I’ve never had a problem with the engine on any of them after 7-8 years regardless of the temperature.

Works very well. Quiets my Cummins Diesel, seems to add a little power.

I use every time I fill up. Good stuff for your engine. 2019 Ram 3500 Diesel HO. The only drawback is the smell. I keep it in an ammo box, in the bed of the truck, have a roll top cover. The strong petroleum smell still leaks out.

My mileage has gone up 1.5mpg after using them for four fill-ups. Just ordered a new set of fillers. Love the product!

So far so good! Was using HotShots, until I found out, opti-lube does better. Went to opti-lube do due it lubing engine. Hotshots doesn't! Yes more expensive, but as they say, you pay for what you get.