Opti-Lube XPD All-Season Diesel Fuel Additive - 4oz Bottles (12 Pack Case)

The best on the market for fuel additives and fuel system protection. I'm a 30+yr ASE Certified Diesel Tech and have seen my fair share of repairs due to damage related to poor diesel fuel quality. Also, for the negative reviews, Its not so much about the fuel mileage for those that are looking for a magic pill. That only happens when you don't drive like an animal and use this product accordingly. This product is all about protecting the most expensive part of your oil burner, the engine. The fuel system components rely on the lubricity of the fuel. The cetane boost is like the added vitamins. You think it costs too much? Go check what your fuel pump (especially the Power Chokes), injectors, or engine replacement costs are, then lets talk. Also, much cheaper to purchase directly from OptiLube's website, just an FYI if you haven't figured that out yet. My orders from them are on average $20 cheaper. I recommend this product to all my customers. Good luck and long live the oil burners!

Truck running better

Already noticed my. ECO is quieter running

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

This was recommended as number one lubricant to put in a diesel

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.

Great product ! I run it in my deisel religiously.

The opti lube XPD diesel additive works great! Very convenient to use.